Miway delaying authorisation of outstanding repairs

My vehicle which was involved in an accudebg on the 17th of Dec, was handed over partly fixed and Miway is still to authorise a request from Renew-it panel panel eaters to finish off the repairs and put my vehicle in the same position it was before the accident. I have made several calls, written several emails and the last feedback I received last week was that the Claim Advisor, Sello, was looking at the authorization request and would contact me in due time. A week later, still no feedback from the Claims Advisor.