Car completion date changed

On the 19th April 2016 i took my car to Automagic Rustenburg to be repaired and was sent an sms that the car will be completed on 05-05-2016.On the 21st April 2016, i received an sms that my car parts have been ordered.On the 26th April 2016, i received an sms that the parts have been received.I called and spoke to Michelle to ask if my car was still on schedule to be completed on the 05th May 2016 and she assured me that it was unless if discover new damages but they will let me know first.On the 29th May 2016, i received an sms that the parts have been received having received a similar sms on three days before on the 26th May 2016.I called Michelle and she siad Lucky made a finger error and my parts were received on the 26th May 2016 and my car is still on schedule to be completed on 05-05-2016.On the 3rd May 2016, i called to ask if it was possible to collect my car a day earlier(04-05-2016) and was referred to Lucky and he said he will call me later in the day to let me know.Lucky did not call me and i called and spoke to one of the guys that works there and left a message for Lucky to call me back but was never called until i called again at 14H14.I got hold of Lucky and he told me that my car still needs lots of work to be done on it and i will not be getting it on the 5th May 2016 as was originally promised.I asked Lucky that if i did not call and ask, when were they going to let me know? They haven't run into additional repairs that the insurance have to approve but they are still late.I asked Lucky to give the new completion date but he said he does not know.Please get someone that KNOWS to call me and let me know what is going on and when i am going to get my car or give it to me the way it is and i repair it somewhere else and they can keep the excess that i have already paid on the 23rd May 2016.