Extremely Poor Service

So I paid the R1 for change of payment details, but payment was not charged on the new card. I as the customer had to contact customer support and request for the payment link, I was sent the payment link and paid same day the 25th of May and sent them proof of payment. Everything was good until the 30th where I received an email stating I had breached contract and I was ******** charges were going to be laid against me in 5 days. When I contacted support about this the lady was rude and just straight ahead asked me a question of when they can collect the device without answering my question of what the issue was. After some emails and bank statements all they rep**** was 'Thanks for honoring your payment' after zealous accusations of non-payment while they didn't check on their side, this show poor communication on their team. I was not treated as a valued customer.