Absa's appalling service

Absa has been harassing me about a loan I didn't even take, when I told them that I never took a loan with them they reffered me to their ***** team who were very rude and asked me to send an affidavit, ID copy and a case number for my ID and License were ****** last year, which I sent however they still kept on texting and calling me to pay up this loan even though I have sent the required docs and now there's a Brookluyt attornies who are ****** harassing me all day long asking me to make payments. I've given Absa alot of time to get their **** together and sort this out but it seems to be getting worse instead of it being worse. I am appalled by their service both over the phone and in their branches in Southgate and Lenasia