Claim outstanding for more than a month with no feedback

My dad was in an accident on the 25th of March 2020, we followed the correct procedure and informed Old Mutual, we received a claim form on the 28th March which we completed and sent back immediately. We then received a link to upload images of the vehicle and the damage but the link refuses to work. We informed numerous personnel namely Nokwanda and Phelisa about the link error both telephonically and by email. We then emailed the requested images through for digital assessment. We have to date not had any feedback or any form of communication from Old Mutual Insure. Our emails fall on deaf ears and go unresponded and trying to get hold of anybody telephonically has become almost impossible. The service is really below average and really upsetting.