HARASMENT BY STANDARD BANK CARD DIVISION

I have made arrangements with the Credit Card Division, sent proof of payments, yet I still receive calls from theri staff EVERYDAY. This is taking its toll on me as I now suffer from High Blood Pressure and my GP can confirm I NEVER suffered from any cronic conditions. I have send numerious emails to creditcardcommunications, and *** , BUT I STILL GET HARASSED. WHAT DO THEY EXPECT ME TO DO AS I AM PAYING!!!!