Worst business account opening experience!!!

I opened the business account in July 2021 and all signed and sent by 30th of July. I collected the bank card on the 5th of August, on the very day 16:04 I received an email indicating that the last page of the mandate was missing and I responded at 19:53 with the signed mandate. The account was active and the deposits were made only to learn that on the 13th August the account was locked again, the payments were sent back to depositors ( mind you this is a business account). I made enquiries from there on . On 17 August, I was told that the mandate was not received I resent it and was received on 19th August, kept on calling every second day and I was told the query was still within timeliness and every time I escalate a new request was made. On 21st of August a confirmation of receipt was made and were waiting to lift up the locking. Called again on 23rd, I was told they’re still within the timelines. Even to date 25th of august , the account has not been activated; guess what another email requesting for the same form; mandate. I have responded again and I bet nothing will happen. I will be closing the account by 12:00 tomorrow and surely take this business account to another bank. FNB is really not up to the servicing game