Third party claim

A Discovery Insure client drove into the back of my car.. I submitted a third party claim on 26 July. I was told to take my car to Wynberg at great inconvenience for an assessment. By the 30th of August I still had heard nothing from Radishaba Macha and after a number of emails. I called and spoke with Themba Mkhabela who assured me I would receive a response straight away. I received their offer which was half the value of the quote I subsequently obtained from another panel beater. I sent this to both Themba and Radishaba on 14 September, saying that I cannot repair my car for what they are offering. I am yet to receive any further answer from them and it is now 5 October. The incident occurred at the end of June. I'm disgusted to say the least.