Very bad and frustrating service

Bad service - 23 June 2023 I received a call from Blake & Associates consultant confirming that my FNB account has been fully paid. They did not send me the letter confirming that, when I called them last month the lady that I spoke to said she will request the letter and send it. I called again after a week I spoke to Mohammed who confirmed that the account is on R0.00 but does not have the letter.

This company is failing to send me the letter confirming that my FNB account was fully paid or paid up so that I can send it to Thier client who is FNB. How are they TREATING THE CUSTOMER FAIRLY? I have been trying to get this letter with no luck. This is so frustrating and it is really not fair to me as the customer.