Poor Customer Care

I recently took out a personal loan at Pinetown, the guy who assited me was in a wheel chair and was in a hurry as he stated he was on his lunch break. 6 months later afer checking why my ammount owing was not decreasing i noticed i am being charged +- R 700 for overdraught service fee. How can i be charged overdraugt on a personal loan ? I am seriously concerned as it seems this is how standard bank literaly robs their loyal customers. I have sent a mail with the whole story to customer care but i recived an automated response. This is really pathetic how a trusted bank treats hard working loyal customers. I am really considering changing to FNB as this is really not on. People take loans due to better their live and in turn the banks rob them. I really need urgent intervention in this matter. The consultants name was kevin and very unproffesional as he wanted to rush through the paper work. I felt really bad as the guy was in a wheel chair and never mentioned overdraught service fees. You guys need to send him for a Polygraph test if he says otherwise. Please contact me urgently to resolve this in a proffesional manner or i will go to the press abd social networks.