Disappointments with Iwyze

I am greatly disappointed with this insurance company. I made a claim after an accident and it took them a month to authorize everything. I have a courtesy car added onto my premium (paying every single month). During the whole process I was assisted by a lady called Hlengiwe who then told me that it was going to take 2 weeks to get my vehicle fixed but today marks a month. When I communicated with the company that is fixing my car, they told me that Iwyze had authorized late to get some parts (that were needed) bought. I am highly pregnant and and i have to go work everyday (getting an uber will cost me about R390 per day), and now I have to return the hired vehicle because today is the last day (marks the 30th day). Please advise me on what to do, I am now exhausted to having to phone you now and again and my emails are ignored. It is your's company's faults that I do not have my car by now due to your late authorization.