Disappointed regarding closure of account letter

As a long standing customer of FNB, I am totally disgusted with the service received from FNB.

Have been trying to get a letter stating that a credit card is closed many years ago and being sent from pillar to post. I was advised to contact the collections department on ***, after holding for more than 10 mins there was still no answer. Once again FNB lacks service when you need a letter of closure.

Highly disappointed with FNB