Complain

I have been paying my contract with insurance,in February 2021 I cancelled my contract but contacted them to continue with insurance premium,Feb,March and april there have been debits from them now I want to claim for my phone screen ,I am told that my policy has lapse where as I made arrangements with the insurance to continue debiting,I am asked to bring proof of payments when I send them I'm being told that they not sure if is for contact or insurance,can you please assist me in getting them to fix my phone at first I had problem with them when my contract started now I have to fight for my phone to be fixed when they taking money every month,I'm told that the insurance is R79 but the deducting R152..MTN sucks!!!