Useless Bank

So i went after work to by groceries to find out my card was declined....... even though i have funds on my card. Do you know what it feels like to get your card declined and everyone in the shop looks at you????????? Went outside to the ATM same story insufficient funds????? And i have money in my account. So i had to go home to tell my wife sorry i could not buy anything for us. So no supper tonight as i had to buy groceries cant buy electricity so no warm water. Some of us are not phat cats and live on a budget. I work damn hard for my money to get told i have nothing............. And i have money in my account! So what will be done about this CAPITEC?????? I want and demand compensation from you guys for my poor experience. WORST BANK EVER.