Mix up of cards being delivered to wrong branch. Extremely poor service!

My boyfriend’s parents changed their address 10 years ago and FNB keeps sending their cards to the wrong branch. The courier company was supposed to phone to confirm address, but today when we phoned them, they have already delivered it to the wrong branch. We have trying to phone FNB now to get it sorted out, but after being transferred to 5 different people they still cannot sort this out. Pathetic service!