Fnb no assistance

on the 18th of September i have filled a Dispute for debit orders tat went through my account, i was told it has a turn around time of 40 working days, i have received little to no response from fnb (premier account holder) regarding this case, despite contacting them on numerous occasions, its now well over 40 days and still no luck from fnb, and in the mean time the same ******** debit orders is still going through my account, i ave no other option but to cancel my accounts with fnb and move back to STD bank.

here is my case number : [ ********** 5_ ********** 13]