Pathetic service: debit order date change

I sent an email on 29 JANUARY asking for my debit order dates to be changed because I changed jobs and I was asked for which day to be changed to and then I heard nothing back from FNB until 18 February when I received an apology and was suddenly asked for a letter of confirmation from my new company to confirm my payday, this was never mentioned before. I sent this through on the 18th of February.

It is now the 25th of FEBRUARY and this still has not been resolved and now, loan payments have come off my account today, AGAIN, so the funds I had reserved for something else are now gone.

Your call center is useless because I've been trying to get hold of the Collections department to get this sorted out, with absolutely no luck. I just get put on hold or my call gets cut. And I sent an email 2 days ago asking for feedback and NOT A SINGLE REPLY even after I sent it again to other contacts and advised the your Personal Loans inbox is apparently full so my messages weren't being delivered.

I don't want another apology email or calls, just fix the debit order date and give me written confirmation on that.

On an unrelated note, please stop debiting loans before the actual date you agreed to. Previously my loans were being debited from the 22nd until the 25th (payday). You're taking money that's planned for other obligations because you can't be bothered to wait until the actual payday.