Disgusting service!!!

After numerous calls during lockdown, I went into the Centurion store to pay my account. The slip on the machine did not print however I received a message on my phone that the payment had gone through. The staff took my details so that they could contact me if they had a problem. I still continued to receive calls. After messaging the whatsapp number, and being ignored several times, they requested proof of payment which I provided. They are now asking for my bank statement!!! This is unacceptable!