Unprofessional panel beaters (Automagic)

I'm not happy with the service I'm getting from the panel beaters (Automagic - Centurion). Took the car for repairs on the 18th of April and the estimated completion date was initially the 7th of May. I was told on the 7th that the date has been extended to the 9th, on the the 9th they extended to the 11th. I had to make a follow up on the 11th regaring the collection of the car and I was told the date has been extended AGAIN to the 17th of May. I mean what's taking so long ?(the car had few scratches on the bumper and headlight had to be replaced, it was drivable). The car has been gone for a month now for something that had to be completed in two weeks. This is an inconviniece to me. The panel beaters are unprofessional