ABSA card division - unknown charges

ABSA keep on sending me a statement with a due balance reflecting. I have not been an ABSA client for many years and have not used an ABSA card either over the past few years. <br> <br> I have tried on numerous occasions via telephone and email to address this and point their error out. No feedback from ABSA.<br> I have now received a further notice threatening legal action for unknown due funds?<br> <br> Surely this is unacceptable and I feel the public need to be warned about this before considering ABSA bank.<br> <br> I am a RMB Private bank client now and very satisfied with their service opposed to ABSA service levels, or the lack thereof.<br>