JET CUSTOMER SERVICE SO POOR

After making a payment at a Jet store using my card and the transaction was approved on the POS, on their system it showed as declined. They refused to give me my goods, said I must return the next day with my statement. I return lowing day, they have a different story now they can't give me the goods since the transaction is pending. I need the goods as I was preparing for a funeral, I pay for them again, they say they will transfer the money back into my account. I am still waiting for that money. NEVER SHOPPING AT JET AGAIN.