Bad Service

I was sequestrated in 2017, my contracts was two times upgraded therafter, I was phoned by MTN askinig me to upgrade my contract, I was declined becauase my credit check failed in 2018 and 2019 when I upgraded they were aware of my sequestration and told me that I had a good payment record and thats the reason they had upgraded my contract. Vodacom upgraded my contract two months ago without any problems. Last year MTN debited my account two days late and the debit order was refused by the bank. I make a payment and struggled for three months to get the proof of payment attach to my account, everytime they suspended my service. MTN you have lost a loyal customer I am moving to Vodacom. I was a subscriber for 24 years