Complaint Review: Gromocares

This scam is starting to hit the web. Gromocare charged my ATM card $9.45 for "air freshener" on 6 July, 2011. I don't know who they are or how they got my card number since I've never been in New York or contacted them. The bank cancelled the card and removed the charge but why can't anyone catch these thieves? They typically charge people $6 to $15 for automotive accessories out of the blue. The 718-407-0835 number yields only a recording to call back during "business hours." It's 3 o'clock in the afternoon on a Wednesday! Does anyone know why a company like this would charge people such small amounts? Is it to later charge them a larger amount once they ascertain the card works or is it to charge 10,000 folks small amounts and reap huge rewards?