Crappiest customer service ever! I had a groupon for $20 and bought $20 worth and the total ended up being $21.62. When I proceeded to pay, the rude women at the cashier said, what are you paying with and I said, I had a groupon. She then said it's $4 more for the "big" cup. I said, you're charging me $4 because I'm using a groupon and there's nothing saying that on the groupon? Rude women stated, "I'm the one making the rules." I didn't want to waste my time arguing and paid an additional $5 plus more. She still had the audacity to say if I got their promotional card. I'm like no thank you, I won't be coming back and walked out.. Beware, they are expensive and fraudulent..