Very poor service and communication

I was involved in an accident on the 27 November, logged the claim with Momentum, provided all the details. To cut the long story shot, the first meaningful call I got from them was on the 13th October from Amos Mashego saying that the authorization has been sent to the repairers to proceed with the repairs. 7 days later on the 20th I followed up with the repairers since I wasn't hearing from them, they were denied ever receiving authorization, but I forwarded them the copy since I was cc'd on that email. they came back apologizing that they missed the mail, they told me they will order the parts with the dealer immediately. the following day they called me but instead of telling me feedback about parts I was told that the car will be written off instead and my insurer will call me. I immediately sent the insurance a mail to confirm the repairer claims but to this day I still don't know what is happening. I have sent numerous emails to their support email without response. When I call the call centre I keep on getting told that the guy who is handling my claim is not in, promised to be called back but they never do. I still don't know what is happening for over a 7 weeks.