FNB really just don't care

Another lovely fnb review Let's set the scene

I was charged a debit order by a 3rd party in error to my fnb account which threw me into overdraft. The VERY NEXT DAY after being in touch with them they very happily refunded me the money and apologized apologized the error and while at the same time I received payment from a client only for fnb to charge me R180 item paid no funds fee After chatting to numerous agents on the app due to their system forever bombing out I was met with a comment that they wont reverse the fee as the account went into overdraft and I must ask the 3rd party to reimburse me, which they've already advised me they will not.

So now I'm stuck as kipper the clown with a bank that refuses to cover me when issues from a debit order which is COMPLETELY out of my control occur and I must be expected to remain their client? Is this a joke?