ABSA account closed 18 years ago!!

NBA started calling me a few months ago saying I owe money on an ABSA account, which I closed 18 years ago! I NEVER in 18 years had any contact from ABSA asking to settle any amount yet NBA wont get off my case. They have even gone as far as contacting my father in-law, whom I have only known for 5 years, and who's details I could never have given to the bank back then, as I didn't even know him at that point. <br> I get calls after 19h00 and when I phoned back to complain, they either cant find my record or they hang up! They are annoying someone who has a lot of contacts. You seem to have built yourself a 'fabulous' reputation NBA which I am sure Carte Blanche would love to feature on one of their shows. <br> I don't owe any money and I won't be paying you a cent.<br>