No Intergrity

I bought a Sony xperia c cell phone last year June nd immediately there after received a call from the inhous insurance company offering comprehensive cover for the phone. I agreed took out the policy nd payment started. 2 months ago the phone's power button broke. Knowing I have insurance I reported nd took the phone back. I never received any confirmation of receipt of phone or communication. I called 2 weeks later to hear the phone is still in the store I took it to nd will leave shortly. After a month of silence from them I called again to hear they do not fix faulty power buttons nd will courier the phone back nd further to MTN for repairs that I will have to pay for. It hasn't been a year since I've had the phone. I'm not happy