Absolutely disappointed

On Friday I has the most embarrassing experience of my life, its month end so I went to purchase my groceries only to come to the till and have my card declined, I have a back up card as well and that did not work (I had money in my account) so I called standard bank and I got cut off, I called back the second lady told me my card was deactivated and she had activated it so all should be fine I proceeded back to the shop to pay for my purchases and you guessed it it declined again, so I called standard bank back this consultant told me she doesn't understand how the previous lady could activate my account cause nothing is wrong so she put my thought to the ***** department this consultant told me there is nothing wrong and I should try again tomorrow or go into the bank... so I tried to make a purchase the next morning and still declined... I went into the bank and the consultant told me nothing is wrong with both my cards so I showed her the declined slip that the store gave me stating the card was an issue... so she said she would give me a new card and log a fault cause she doesn't know whats wrong, I had to pay for a card which is making me even more upset as this is standard banks issue and I have to pay for it... the service is so bad and I would not recommend them to anyone... this has been such a painful experience and standard bank has not sympathized or assisted at all its just been me running around so I can have access to my own money to purchase groceries!