Admiral Petroleum review: using card at pump

I used my card at pump because there was a few people inside and it's a small store.. Seen $75 was taken out after I left and drove home... Had to go back to gas station to find out what was going on.. They told me that there is a hold up to a certain amount if u pay at pump.. No where on pumps does it say this.. So I wasted gas I just put in and told a hold of 3 days.. What the hell.. It should be advertised on the pumps