Sloppy service levels

I recently decided, based on the bad service, to rather cancel the facilities with the bank, seeing as they could never assist me with sorting out the rewards for purchases at their partners. That's basically it, which I stated when I emailed them, fully expecting them to resolve the matter. Well, that never happened. They cancelled everything. I have a letter saying it's sorted and sorry to see me go, but I will be welcomed back. Not one time did I chat to anybody, not one person tried to resolve the matter. If it was ressolved I would have spent more on the card to claim my rewards, but clearly, as I am not a Discovery Medical aid member, they really don't bother. I picked that up with the numerous times I called to sort out the vitality banking rewards. I settled the few hundred they wanted for fees to be on the rewards programme, even though I have never received any rewards in the years I was with them?????