No traction on the write off claim reported over a month ago

My accident happened on the 15th of February. The claim was approved before the end of that week. Once the car was stripped at the repair shop, they found further damage and Miway decided that it was uneconomical to repair the car. They informed me of this on the 26th and asked me to get the settlement letter and other documents from the finance company. This was done within 2 working days of the request. Since then I have been on a roller coaster ride trying to get feedback from the claim assessor assigned to my case. Today my courtesy car hire expired and I still do not know when Miway will pay me for the written off car. How am I supposed to get around? How has it taken more than a month to resolve this? When you wanted business from me you were calling back whenever you couldn't reach me. Now I am chasing after the claim assessor who I haven't spoke to since they informed me the original claim was approved for repairs. I have emailed them. I have called their direct line, with no success. This is ********** service.