ABSA SERVICE STINKS

I logged a report regarding a paid up letter>I have been dealing with Karen Jonker who could not trace my emails and after numerous emails showing her proof of payment she was going to send to card division to trace the payment> and that's where ii ended. she fails to provide follow up and then sends and email to say complaint will be closed. Hello how can a complaint be closed when you fail to resolve my complaint. I do not understand. To top it all off I get email to pay up or else meaning she has even failed to log a dispute against my account. Please who can assist and advice how to get ABSA to sort my complaint it is ridiculous. I paid on the 15 October and this has not been resolved but sending letters of demand are apparently easy to do please help me I need to resolve