Sub-Standard Bank

This is the third time this issue has happened. I picked my items with my family, go to pay and I cannot pay because my card is being rejected. I know I have enough funds to pay with but for some odd reason it keeps rejecting my card. So my question to Standard Bank is, why are you hiring and employing sub standard developers that cannot maintain a system for the sole purpose of using our hard earned money on items we need without feeling embarrassed? Banking with Standard bank seems like it's just a big troll on loyal customers. Perhaps explain to customers what on earth is going on or prepare to lose customers. It's okay if it happens once. But fool me once shame on you, fool me twice shame on me, fool me three times and you will lose another customer. I am tired of having to pay ridiculous fees to withdraw money from another banks ATM because you guys have a poor recruitment and cannot hire people capable enough. Shape up or get out of the business.