Poor service

Had a contract with MTN for the past 8 paying insurance as well, then decided to cancel this year but I kept the insurance, now my phone got ****** called customer care to blacklist my Samsung A30, was being taking from piller to post from pre paid to contract no one could assist me spoke to Diboseng, Siphokazi, Asanda, Unathi, Zandile, Nomagugu and Ndiphile no could assist me because they couldn't pick up my device. Then they decided to escalate a case to ***** dont know why but they did ref *** and that case is now closed.

How could I pay for insurance where my device was cancelled from they system, I had to go tp the MNT store to get that information. So now I dont have a phone I need to blacklist and claim from the insurance and MTN says my device was cancelled so I was paying insurance for nothinh, I need a phone ASAP if not need a refund for insurance installment I was paying.