Ads get hacked

hello,
I am facing problems of hacking in my ads. I have correctly ads from the cpmleader only on my website http://www.astrointerest.com. Few days ago I have tested ads from ro2.biz but after 2 days I removed them. Now the ads from the ro2.biz are showing above my cpmleader ads, I also observed some popups. I have removed the codes from my widget and also deleted the ad type form my account on ro2.biz. I have blocked the ip and domains of ro2.biz but still I am observing ads from the roq.biz covering my cpmleader ad.

Please help me.