HELP with stopping spam!

[PjDaBadMan]

Thanks for viewing this thread. I do need help with stopping someone on my site from spamming me like crazy.

I am getting multiple users a day (all with different IP addresses) making posts like this on. I will remove the contact info provided by the users.

________________________

Valid And Fresh Info For Sell Pm Me.
I Make Sure You Are Satisfied With Whatever You Are Buying And You Get Immidiate Delivery Of Stuffs After Payment!! We Dont Give Demo Nor Samples Nor Test ..... EveryStuffs 100% Fresh And Live!!!

I Sell Fresh Checked Dumps, Cvv n Fullz With High % Turnover, Which Means u Do Not
Loose Ur Investment !!!

Our Group works in Eu uk and USA, we have 6 people in this bussines.
We keep High Class cards for our own cashiers, so here we sell only classic/standart/discover/gold/plat/bus/corp/sign amex Small_Corporate/Corporate/Centurion card dumps randomly!!!

MY TERMS AND CONDITIONS BELOW PLZ READ CAREFULLY !!!

1. I provide you only original AA and AAA card dumps.
2. I use e-mail & ICQ only
3. No tests for free.
4. You'll get your stuff only when I get the money.
5.1. Buy-for-test is first time order. Minimum is $300 for WU or any amount for LR
6. I always have special offers for partners
7. I replace holds/pickups/expires/invalids. I do not replace declines. But anyway I always try to propose some solution to my buyers

I Accept Payment Via
Liberty Reserve lr
Western Union wu
Webmoney wmz
Money Gram mg.

Free Sample askers , Beggers n Time wasters please don,t contact me or add me !!!

My Contact Details Below!!!
xxxxxxxx@yahoo.com

________________________

The message continues to show prices for this thing. I have added a captcha. I have banned all the IPs. But they still keep appearing.

Any help guys??