Pathetic and distuting service

On Saturday 23/06/2018 i went for shopping at Vincent east London Pick'n pay had the worst experience of service in my entire life time was humiliated and degraded by the so called store manager after their card system had failed to recognize payment for my purchase though the funds had gone off my acc they made it as if it was my personal problem yet their card system switched off while i was in process of my payment we had to retry the card again which then declined on the second attempt as there not enough funds anymore despite me telling them the funds had already gone off my acc and showing my bank statement they refused to accept my banks notification said system switched off therefore they can not accept my proof alone insisted on second swipe to an extent i had to even leave the groceries there with my kids in the shop and go get a bank statement to prove that indeed money went off my acc after they were calling each other to analyze my bank statement, still that wasn't proof enough for them i had to make another payment using a different bank in order to get my groceries my money never returned to my bank card as promised after the up's and down i had to do prove i had paid for my groceries i felt humiliated by the treatment it was not insane, was spoken to as ******** not as a customer as if it was my fault that their system switched off in the middle of the transaction. i felt humiliated by the manner which the matter was addressed as i had to do all this clarification in a foyer in front of the public as a person who works in sales environment my reputation was badly affected by this ,as i looked as a ***** and my client's were now questioning my reputation which as we speak there has been client 's calling my work place asking about the incident they saw, as in small town everybody knows each other am deeply hurt by the treatment i got from your store which might even affect my income earnings as a sales person (work) on tueday i went back to the shop to report that i hadn't received my money as then which still i didn't get any joy from the matter after spending half a day yet proving my self was then promised that the matter would be sorted by end of business same day which wasn't it lead to me being affected emotionally already i have missed 2days of work as this is affecting me both financially and emotionally because each time i got there I'm being treated like a **** and CROOCK the last straw after numerous calls from them saying the funds were not reflecting they could not commit to any refund before proving such on their side, i got a call from a person who introduced herself a as the store manger who rocked up in my office bringing me raw cash equal to the transaction which was R3500& a bunch of flowers which i refused as i believe i deserve a better apology for all this ,she said they have finally seen the funds on their payments for that day there they brought my refund .