Cellphone Insurance

I had my cellphone, which was insured by C Surance, ******. I submitted a claim 3 months ago but am still waiting for a satisfactory response from either Cell C or C Surance. My claim was rejected as they said that I had not used my phone for over the month prior to the theft and that, when it was ******, it did not have my Simcard in it; neither statement was correct. Since then I have written numerous emails to them with no response; in addition I have tried phoning them but they never answer their phone. The Cell C/C Surance service is attrocious, abysmal or rather non existent. On top of everything else I continue to pay premiums on the ****** phone. Words fail me, Cell C customer service is disgraceful.