Dstv Harassment of a cancelled service and still smsing me saying I'm in arrears

I cancelled my dstv services in January 2022, the consultant confirmed this and refunded the credit due. I then received smses of being in arrears in March. I called through per the following details Dstv called Sunday 3rd April on *** at 10.23am ,+*** was the line called from Reference from agent ***8-i314. I then followed up as no one called me. I then used the app and your service team confirmed my account was in order. I however once again got smses today to say I owe dstv and my account is in arrears. This is beyond frustrating as your call desk and your systems are not aligned and it's insulting to be harassed like this given your team says one thing and then tour system does another. I want this resolved once and for all.