Bad Customer Service

last year I reported to FNB that my husband is late, requested them to close his accounts. they have not done that and last week I had to go to Brackenfell branch and the ladies called them with no luck. she sent an email and get back to me on Monday, saying that they will get back to me. up until now no response. how is one expected to continue with life if we get such service? instead the account is accumulating since minus since there's no money for debit orders. can you please do me a favor and cancel this once and for all?