Bad service

I took in my Samsung S7 for repairs wherein communication of the progress of repairs was done via sms. I paid an excess fee of R750 at the end of December 2017 whereafter several follow ups I was told the device is beyond repair and I would get a new one delivered. I am unsatisfied at the fact that without me calling everyday to follow up it seems as if my claim is not receiving attention. No communication has yet come my way since I paid my excess. I was then told on the 11th of January 2018 that the supplier had been contacted and was yet to respond with a list of phones should they not have the S7. Ive been calling daily to get feedback of which im told by agents that thy would fasttrack my claim amd send me an email of which I never receive. Today an agent made me hold the phone for 20 mins then dropped the call. At the end of my contract I would like to end my dealings with this insurance as it is of no benefit to me. Please help me get my phone back