This is an urgent matter of money not sent back to my account after a decline purchase

I bought a dress on the 13th of April, the fix sent me an email on the 15th of April saying that they couldn’t find my size, why did they show the size if it wasn’t available?

My money hasn’t reflected for 15 days now. My graduation is on Friday, I’ve called TFG group 30 times since last week because I urgently need my money. I’ve wasted money on airtime, sent multiple emails they didn’t respond to. I need to buy this dress by tomorrow morning (29 April). This is the worse service ever. My Bank FNB says the money TFG “sent” doesn’t show at all on my account.