5 months later and no response. Poor service

I was hijacked on the 8th of August 2024, My claim was submitted on the 12th of August 2024 and today is the 30th of November 2024, I have had the most difficult experience trying to get feedback from old mutual ever since. They sent me an email stating my claim was rejected on the 11th of November 2024 without any reason or even a rejection letter. I sent over a 50 emails requesting feedback and I have not received a response since, when I call I'm told to be patient it is almost 5months since my claim and how much patience should I have? I wouldn't recommend anyone using them as this seems to be a trend at claims stage.