Standard Bank - ...Never ever bank with them

I had a call earlier this year from Standard bank advising me that my credit card was in arrears. I advised the consultant that i do not bank with Standard Bank and neither do i have a Mastercard with them. The consultant advised he would update the system. About a month later, i got another call for the same query, unpaid Mastercard. AGAIN i advised them i do not have a Standdard Bank Mastercard. The consultant advised he would clear the query off my name. I never heard from Standard Bank again....... This week I did an application to purchase an asset, only to have it declined due to my name being listed with ITC!!!! Low and behold....it was due to my non payment of my so called STANDARD BANK credit card.... Standard bank was so quick to list me, even though i dont hold this card or bank with them...for obvious reasons....but could not call to clarify the non payment before listing me!! I called Stadard Bank legal and advised i need this cleared off my name immediately, only to be told it would take 7 to 14 days!!!! Why should i suffer for Standard Banks incompetency and lack of simple communication. I am most certainly going to hold Standard bank responsible for any loss on my side and for costs incurred!!!