Worst service

I reported my phone lost on the 18/05/20 , which is insured with Csurance, my claim has not been processed, cause the have requested for a proof of number change. They sent an email to Cell C to request for the proof of number change on the 23/05/20 and I have been calling Cell C to request for it as well, with no assistance. This is delaying my claim process and an inconvenience to me. I also request for a sim swap on the 29/05/20 which has not been done as yet. Pathetic service