BANK Querie

I was at ATM on Friday and I'm not very pleased as to how my querie was tackled I made a deposit of R7000 the ATM kept the money and I received a receipt saying your deposit was unsuccessful I then immediately approached one of the consultants on duty of wich I explained what happened she took my receipt and gave it someone in the branch I was just told a claim form will have to be completed related to my querie and that was it I had to ask will I be contacted and will the matter be resolved the same day still and the consultant response was I think so , I left the branch very confused. I went back after 3hours and asked for the lady I dealt with earlier I asked someone else she went to the back and came back I was then told they found a surplus of R6400 I'm very unhappy I wasn't call after they had found the surplus knowingly a querie related to the issue was brought to they attention. still the money I deposited was short I then requested for someone to explain the possible reasons as to what could have happened my account was checked to see if the R700 was funded into the account even though I told them I haven't received any sms from the bank it shows that there's a error with they system because on the receipt the amount of R700 deposit was unsuccessful, and yet the account wasn't credited with the amount on the receipt I was asked where I got the money from and if I'm certain I had deposited R7000 FNB N1 City's service is pathetic they have no customer service ethic , I'm very unhappy and want feeback I will not leave they service to be un noticed! ... I want my money back .