Murphy USA

I paid 5.00$ for gasoline with a pre paid debit card and they put a hold for 100.00 on my card.. This is 12/4/15 and my money will not be available until 12/9/15. I find this ridiculous and unreasonable. This debit card is also my pay card. I have bills that will not wait until 12/09 and this is a temporary job. I am going to speak with an attorney to if this is legal. It is right by a large Walmart and I think people should know this before purchasing gas, and being inconvenienced.