FNB lack of communication

I have been trying to close my cheque account or find out if my cheque account is closed for over a year. I had a private banker with FNB as well as a few email addresses of various staff who have helped in the past. I was told to go into the branch, pay up the overdrawn amount, to close the account which I did. When I was there, the system went offline, and the lady told me not to worry I can leave, and she will ensure the instruction is carried through. I am now getting smses that repeat R50 transactions are happening on this account.?? I refuse to go to another branch. I have been trying to email FNB with only automated responses.