Delay in closing my account

It has been over 48 hours since I logged an intention to close my premier banking account but this has not been done. There was ********** activities on that account and I want to have it closed and open a new one. Further, whenever someone tries to call me from FNB premier i can hear them but they can't hear me. This is not the first time and it only happens with FNB premier banking calls. Please close the account and furnish me with another one. I want to transact otherwise I will be forced to look for another bank. this is urgent.