MTN is horrible at communicating

MTN has got to be the worst at communicating. I sent in my proof of payment on 26.04.21, I then asked for confirmation that my account has veen paid up. They rep**** on 29.04.21, saying my request had been sent to the respective credit bureau to update. I followed up on 10.05.21 & I've had no response whatsoever. I've been emailing mtn legal since they gave me my balance. They have no shame in being so horrible at communicating. All I need is a written confirmation that I've paid up then I'm never getting any products/services from MTN, for my own peace of mind.