Non-existing service for 3rd party claim - 5 months, no payment, approaching client directly for cost of damages

3rd Party claim lodged on 15 March with all relevant documents. No communication, no updates, you cannot get through to anyone on the phone at any number. I eventually got response on 30 June (no apologies!) after the waiting period for the assessment already passed and only after a strongly worded and threatening email, to Moosa Nabbie. I accepted, signed and sent the required documentation and received acknowledgement of this on 19 July, waited another required 30 days until today 23 August (5 months since all documentation was sent in to them initially) and still no updates, communication or payment. I have been trying the whole morning just to get hold of someone in the Motor Vehicle Liability Claims Department, going through 6 digital voice options every time. I got through to the wrong deparment at last where I was given the name of the Moosa Nabbie's supervisor/manager and tried to get hold of him (Given). After trying twice again to get hold of him, the line cut when an actual person spoke on the other side. I tried sending another email to Moosa Nabbie, however the mail is returned undelivered. I found a general email address and have forwarded the email in the hope that someone, anyone(!) will respond. There are no further avenues that I can follow other than approaching their client directly for the cost of damages. I feel very sorry for Old Mutual Insure's clients who pay good money for this poor service and *********** claims system.