Non-existent customer service for a claim

An insurance claim was lodged on 6 Apr and was acknowledge by Old Mutual on 7 Apr. Old Mutual stated the claim would be processed WITHIN 14 days. So far there has been NO response or feedback from Old Mutual on this claim. Repeated attempted have been made to phone the call centre but no-one answers the calls or responds when the line is picked up. There have been no responses to ANY emails either. An online complain was also submitted but there hasn't even been an acknowledgement of this.