Bad Client Service - again

After making so many calls earlier this week, laying complaints, i eventually received an email on 23/9/2020 where Erika emailed Wonder (FNB) regarding the paid up letter for the 1 account that must be closed on their system. On 21/9/2020 FNB advised Debt Rescue that the Paid up letter will be sent within 24hours, on 23/9/2020 the afternoon, still nothing was received. She advised them in the email that i am fed-up and will take it further if not sorted, Debt rescue was then advised that the letter will be sent by Friday (which is today 25/9/2020). It is now 17:31, and still nothing was sent to me, no paid up letter received. I tried to call Debt Rescue between 15:00 - 16:00 this afternoon and was told Erika is not in today, i tried to call again later on and the phones just keep on ringing. I tried to call the complaints department and the phones just ring. In the email it was said that the paid up letter will be sent by today, is nobody following this up? after more than 30 emails sent, not all of the emails were answered where i had a lot of questions. complaints department haven't even rep**** on the emails i have sent in the last week, had 1 phone call from a guy and he said he will sort it out, still nothing done. How can you say you will sort it out or come back the next day and don't do it ? that is not client service. Why must i refer anyone to debt rescue if this is the service they will get at the end?