MTN Insurance still not CANCELLED

I have upgraded on the 14th January 2020 to my new devices and before I did this at the store I called the Insurance department and cancel both numbers I had insured, after I have done this I received an sms stating that this cancellation is in process. Upgrade was successful and I have taken out insurance with our Home Contents. We are in May and still I am being billed for insurance on phones I do not have anymore and cancelled on the day my upgrade was done. I have called the MTN Insurance department twice and they give me the same thing, they can only see my husbands number being insured??? THIS WAS CANCELLED IN JANUARY and both our numbers was cancelled. I will NOT be held LIABLE to pay that insurance charges as I have done what was supposed to, and my monthly premium STILL includes this insurance charge!

PLEASE REMOVE it as I have been patient all along even though it still has not been cancelled!!!!