Bad Customer service

I got involved in a car accident on the 20th of October 2019, and my car was towed to Renew IT - Rivonia on the same day. Dial Direct confirmed that a repairs will be done on the 5th of November 2019. Got confirmation from Renew IT that they will begin with the repairs. Then got told they waiting for parts Thursday the 7th, on the 11th "Apparently awaiting for parts", on the 20th " Car moved into the panelbeating" Step 1 of 5. Thursday the 21st " paint preparation". Today I called to find out the progress on the car and estimate date of completion, Its only moved to painting today, they cannot give me an estimate how long are they planning to keep my car. Been waiting for the manager to call me on three occasions but no response as yet up to today. What do they gain by keeping my car for such a long time?