Kaak customer service, rude agents who are not willing to work with customers

As I continue to struggle with renewing my contract because of a 2c bill, which was paid in January, I then asked the to give me the banking details so I can pay their 2c again, guess what they gave me an eft payment method with incorrect details, the Ref required is a 19 digit for eft, I have the longest details. If I can say myself their service is the poorest