It has been not long in ownership and I got mixed feelings rgds to audi

So far I replaced:
- front upper suspension arms, all both sides
- o/s shock absorber
- airmatic pump rebuild
- engine serviced oil, filters
- new battery
Picked up car wensday and Thursday morning eml came on.
Plugged into star - timing off bank 2, something like that
Yesterday back to the workshop - timing belt tensioner gone !!!!
I was so lucky the belt didn't jump a tooth !!!!
I just don't get it how garages operate in the UK.Timing belt job was done on my car not that long ago-after investigation it looks like new belt and pump was fitted but old tensioner was left !!!! :-0
Anyways that will be sorted next week
Never had an audi before and from the biggining I have problems.....already thinking to go back to mercedes
Sorry a bit upset, car probably not at fault only bad ownership - some just don't really care