NO FEED BACK AND POOR SERVICE

I took out a revolving loan in December via telephone, according to me everything was fine with my account until I got a call from the collection department telling me I haven't paid my account in 2 months, I then asked how was that possible when I had provided the consultant that was assisting me with my banking details, I was told that it was my responsibility to make sure that my account was paid but how was I going to pay my account when I had not received even a single statement from standard bank ? . I then made an arrangement with one of the collections guys , they transferred R500 from my account and made an arrangement to pay the balance in two installments , the 1st installment was supposed to be paid end of March they then created a debit on my account but I was debited 4 times end of March and again I was debited R728 which I still don't understand what is it for. The collection department called me again on the 1st of April 2016 the lady promised to assist me with problem but she never called me back. The service i received is just poor I feel that my money is no longer safe with standard bank.