FNB - No response & wrong info given

Good day, I am trully unsatisfied with the customer services received from FNB. I lodged a letter of Dispute on the 14th of January 2015, up until now i have had no feedback from FNB unless i contact them! Money was taken out of my account on the 13th January 2015 **********ly, in October 2014 this happend as well and i done all the neccessary required from me and the money was re-imbursed into my account from FNB. In October last year i was told to cancel my Bank card, which i did. I was not told to cancel my account, how is it that the same company accessed my account details and why did FNB not let me know i should cancel my account! If my account had been cancelled none of this would happen again, also i do not have an overdraft facility and normally when transactions are done, FNB will decline the transactions. There was no funds in my account, so my account went into a minus. I have bills to pay, debit orders that goes off and for my account to reflect negatively is just distasteful. I would appreciate it if i could get feedback, January month is a hard month for most people and I have bills to pay....