Standard bank service sucks

Gosh a totally inefficient horrible service telephoning credit card division and even the branch experience. I Am trying to close my credit card account so phoned them on Monday 17th after transferring cash on 15 August 2020. Wanted a settlement amount. I battled to get through but was relieved when someone answered on 4th try.. Cash never reflect so I was asked to phone the next day. Settlement confirmed next day and I paid in amount in full They failed to however provide me a letter confirming closure so I visited the Springfield branch in durban on 20th August. Another useless branch where I waited 45 minutes only for Gavin to send me to phone gauteng credit card using their internal line. After another wait of 20 minutes I was told they cant assist. I went back to gavin who promised to phone me but he has not. I don't want standard bank to charge those fees etc so I merely want confirmation of closure. Why is this so damn difficult . A useless bank