Circle K

I came to make a purchase on my debit card and get cash back of $10 but was told I had insufficient funds so confused I look at my banking app to check what happened with my funds and there's 3 charges pending from this store all 1 minute apart and 2 were the exact same amount of $8.67 then final charge of .01 can't so I tell the clerk he charged my card 3 times that's y there's no money there its already been charged he informs me he cant do anything until manager comes n at 5 am now it's approx 3 am so I'm stranded no gas here for 2 hours no money no merchandise from circle k & no one to help refund the money illegally taken off my debit card