MTN insurance very unheplful

I have a contract with MTN, I put in a claim in October 2019 around the 27th in MTN jubilee mall. I have been told that the devise will be picked up for repairs and I must wait for a call. I was due for an upgrade 1st of Jan and I did go in to upgrade. My old devise is still not fixed and I had paid for the insurance. I am unable to cancel the insurance on the old device as I have been waiting for MTN to come fetch the phone. It has been two months and now I'm forced to continue paying insurance on the old device in January while I was planning to move my insurance to the new device. I am now looking for an alternative insurer for my new device which I'm unable to use beyond the walls of my house as I am afraid it will be lost or ****** before I can have it insured. I made several follow up, I was told the claim was under investigation, what exactly are they investigating because no one called and no one came to asses the damage of my phone to date. Where is this investigation taking place because I filled out the claim forms and they were submitted to MTN jubilee mall but the devise is with me to date. Recently since December my claim has been with the underwriters, I also followed up yesterday and my claim is still with the underwriters. Why must I continue paying these people if I'm not even sure that they will end up fixing my phone. There has been no effort to send me feedback ever since I put in this claim. Today I must go and find a new insurer for my new device. I just wanted to move the insurance to the new device but I am unable to do so until my old device has been repaired. This is so unfair.