Disgusting service

I was purchasing my groceries on the 29th of February and while paying, the transaction failed but money was still debited from my account. I had to pay twice as the funds were not finalized and were still under pending. It is close onto 2 weeks now and the failed transaction is still listed on pending so the store can't refund me because they never received it and FNB has still not reversed their error. I have been a client of almost 20 years and their service has been in steady decline while their fees are constantly increasing. I just want my funds back and I am going to move to a different bank. This service is truly disgusting