REAL GOLDSOFT, BAKU Stole money off my walmart card, Internet

I was on my computer trying to get secerity on my computer the secerity tool icon was on my desktop I click it and choose the $49.99 service to get rid of the problems on my computer it told me I had viruses  and worms on my computer. I know I had 100.00 dollars on my card I had just loaded on there the same day. I completed the transaction and nothing happened. I tried to do it again and nothing happened again. I cleared out of it and figured ti didn't work because the worms and viruses was still showing up on my computer.  I ended up going today and getting me something for breakfast and my card declined. I called walmart and looked up my account online and my card was charged $99.98 for some retail stores.  It was suppose to have security on my computer now I have no service and my money is gone.