They forgot to tighten front wheel screw. Here is my experience:
I gave my bike for paid service, went to collect it after I got a call saying its ready. First thing I observed was that the bike was not washed. I informed the supervisor, he deducted 150 Rs from the bill. After that I took my and was on my way back to office, on my way I started to hear noise from the front wheel and front brake was not effective. I stopped and checked that my bike front wheel is loose and so somehow managed to take it back to popular bajaj. Supervisor there checked that and fixed it, after that he vanished without even giving any explanation. They just left my bike there and one mechanic came and told that my bike was fixed long time back.