Numerous Delays in Delivering My Vehicle

I am extremely frustrated with these people. My car , according to them was meant to have been out of the workshop early last week. That was moved to early this week because VW according to them had supp**** the wrong part. Meanwhile no one bothers to call me and tell me these issues I have to find out everytime I realize these people have missed a deadline. Even worse the ****** system @yourservice that they rave about is communicating something totally different from what they are saying - whats the point of doing online tracking of a job when the thing ****** lies. Now my car has been in final inspection for 2.5 days , I call Tony who now tells me they are waiting for a part. How are you waiting for a part when the system says you are in final inspection. Dont you inspect a finished job? and this is all for such a minor bumper job.