Ugh c4s issue

I just attempted to buy 2 clips as I hit complete transaction I was brought back to the stores main page. I received no e-mail saying the clips where purchased but im concerned I may have given my credit card info to someone has this even happened to anyone before? I noticed there was an 18 in front of the C4S link as I was purchasing am I freaking about nothing or should I get to the bank lol...

an 18 in front of the C4S link ?
do you mean C4S was hacked??? which store?