Had 4 monthly withdrawals by Shahelp.com for $50-53 each hit. My bank didn't pick it up. Since blocked the card and disputed the charges; likely to receive all the money back.
From my own research (thanks google) the company appears to be linked to porn sites. From what my Bank has told me, it's apparently some sort of telemarketing company. The website itself is filled with thinly-veiled and baseless threats regarding charge backs.
tl;dr - It's a scam. If you've had money taken by them, report it to your bank, get your card blocked and start the dispute process.