I recently moved to Chennai from Bengaluru. Its been long since i pampered my car, can't delay any longer

Been to 3M car care(next to Mainland China) in OMR road on 4th july 2015. I had booked earlier for interior cleaning of my Fabia at 9.45 AM.
Met with Mr.Srivant of 3M-OMR by 9.45AM. Being the first customer for the day, had time to view demo and discuss about packages. After the demo and discussion, went for the planned germ clean plus and additional UV Protect. Spent the next 3 hours in the Lounge. Spent the 3 hours in skimming through newspaper and magazines, had tea, checked the car in between. In the mean time, 4 more cars(innova,linea,nano,city) came in. Whenever i crossed 3M(OMR) earlier, i would see lot of cars and assume that without prior appointment, its impossible to get car detailing done. Only now i realized, that its not the case. Out of the above 4, few of them came in directly. Also, cars of people visiting Mainland china are parked just near 3M as they both are in the same complex.
Once the work is done, internal inspection is carried out and any issues found during that time is fixed quickly. When its done, customer get to inspect the car. I found the seats a little wet and was told that it would dry in the next couple of hours and it did. I felt the interior cleaning was done well. Paid the charge, gave a relative's contact for free wash recommendation. All in all a pleasant experience, so far!
After i left the place, enroute to my home, i noticed two things (i)the front power windows was functioning erratically(Guessed it could be due to the wetness) and (ii)the chrome lining of front passenger A/C vent was missing. Called up Srivant and informed about the same.
My Fabia is Ambientte model, with power windows for the front passengers only. Front passenger has a control for his/her side window. Driver has two controls, one for his/her side window and one for the front passenger side window.
For ease of understanding, lets call
Front passenger side power window control -> PW-P
Driver side power window control -> PW-D1(for driver side window) and PW-D2(for front passenger side window)
Took my car back to 3M, With a hose, they blew air to dry of any wetness near the controls and checked the power windows again, the PW-P control started working fine after a few tries. However, the PW-D1 and PW-D2 were erratic still, the driver side window works sometimes and sometimes not with PW-D1, the front passenger side window doesn't budge at all when tried with PW-D2. They removed and opened the Controls(PW-D1,PW-D2), blew air, removed some dust, re-attached and checked, this time, the PW-D1 control was working for window up and down, except that you need to keep PW-D1 pressed until it completes its operation. And PW-D2 didn't work at all. Srivant told me about a nearby shop where power windows are done, sent a person with me. Person at the shop told that he only works on after-market setup and it looks like the switch may be gone and might need replacement. He also told us to get it done at the showroom(as i expected) and that the cost might come around Rs2000/-. I called up my SA in bangalore(Vinayaka Skoda - Mr.Pradeep) to enquire on the cost and was told the switch might cost around Rs2000/-. Informed Srivant over phone and left to 3M.
AT 3M, Srivant sat with me, apologized for the power-window issue, gave me an envelope which had Rs2000/- in it. Asked me to use it to get the repair done and collect the bill in their name. He also gave me a coupon for free car wash to compensate me for my tension and time. I thanked him and told him that he responded better in the given situation. When enquired if they missed some precautionary measure when cleaning, he replied in the negative and told me that its a first occurrance. He also told me that he couldn't find the chrome lining, but will try to check it at the time of closing when they sweep the entire shop.
I reached home, had my lunch, after about 2 hours, checked the PW-D1 and PW-D2, no improvement. Next day morning, i got a sms from Srivant stating that he was able to find the chrome lining and that i could collect it. I messaged him back thanking him and that i would collect it later since i was leaving to north chennai and would be back by night. Then, started from home to north chennai to meet few relatives. Reached OMR tollgate, waited for my turn to get the ticket. When i reached the counter, i pressed PW-D1, nothing happened, pressed again, still nothing, aarrgh!
Luckily, my kid, seated behind had opened the window, used it to handover the cash and collect the ticket. After that, stopped by the road side, checked both controls, PW-P is working, PW-D1, PW-D2 are not working. Messaged Srivant and continued the journey. On my way back, stopped at the same toll, same issue with window and now, my kid was sleeping and the window is closed Opened driver side door, handed over the ticket. The guy at the counter looked at me strangely(or so i thought) and then gave back the ticket.
Met with Srivant today and collected the chorme lining for A/C vent, showed him the PW-D1 and PW-D2 not working and left.
I wanted to narrate this to emphasize on the following
1. Whenever we take our car back from service/detailing/cleaning/washing whatever, its better to check as much of the controls. I always do(did this time too) check the indicator, light, emergency light, wiper but never the power windows. Even enroute to home, with temperature outside in chennai, i drove with A/C and closed windows, not thinking a second for powering down the windows. On my way in, i wanted to have a word with our apartment security and by chance i noticed this power window issue. Good that i was located close by to 3M.
2. I felt, the way the situation was handled, is good
Moderators, I couldn't post to 3m-car-care-chennai thread as 'reply box' itself was not available for me. Please merge if required.