Poor service by old mutual insure consultants

Their client knocked my car from behind, I submitted all documents needed for the third party claim on the 4th of July, upto today, I have been sent from pillar to post, I do not know whether they will ever sign an offer to get my car fixed, their lack of communication and their rude consultants make matters worse, one day I get told the manager has signed off the claim and Mosa will communicate an offer with me, the next day the very same manager whom I was told saigne off the claim told me she is still busy, at this point I honestly think I'm heading to depression