Claims of money owing with no proof on record.

I am so sick and tired of receiving sms claiming I owe Standard Bank money.I tried to call this company with phone number provided and it connects you to an automated switch board.I have requested proof of debt countless times,to no avail.Amazing that I last had contact with Standard Bank in 2006 more than ten years ago.This company is ************ with their business dealings and staff are arrogant when you request proof.I will be listing an official complaint with NCR should this harassment continue.My credit profile is clear and no listings are reflected.