My card number and pin were ripped off at a gas station

I bought gas at a Raceway station on Gross Rd. in Mesquite this morning. I used a different pump than I usually use. Right before 5pm today, I got a call from my bank saying that two gas purchases at Shell stations in the Houston area looked fraudulent. I confirmed that I had not made the purchases, and the whole hassle is created of having to change over all my business to use the new card number. Still, I am glad that they didn't get much with my card number and that I won't get burnt. I had heard on the radio (KRLD 1080am in Dallas) about this sort of rip off when they have readers on pumps. Well, I found that it is a real threat. The fix is said to be that if you use a card, don't enter your pin but use it as credit.