Proof of payment not good enough

Bought an aircon at store, was told to send EFT proof of payment. Sent, store will not release the product until payment has cleared in their account. Why would you ask for proof of payment of it means nothing. Now have to wait another week for installation. Understand policies but if I was told, I would've gone to the bank and drawn the cash and paid for it. Just purchased a sound bar as well which I paid for in store. Wanted to purchase a TV on Saturday, I guess my business will be appreciated elsewhere.