Consumer Rewards.net review: Scammed out of $500.00 kroger card 2

I had previously had a email for a chance to receive a $500.00 Kroger gift card. They said I had to complete a total of 8 offers from their list and I would receive it. To my stupidity I fell for it. My Visa card showed all completed 8 purchases done and deducted. Well their site said it only showed them 5 offers were completed. I got 1 response stating it shows only 5 completed. I went further by listing in detail the dates and times and names of what offers I completed. Well that was on 6/22/15 and no response. I sent one final attempt, stating I researched them and found out they were linked to others being scammed. Not surprisingly i log back in to check the status and they erase all but the last correspondence i sent them. They scammed me out of the money, even though they say they have no affiliation with the company who are making the offers. I sent for a new credit card so they cant continue to charge it. I just want these people to be stopped.