competitor lying - reputation ruined

Hi,
I have a very big problem and i need help. I have a website where I'm selling services. since the first days of October I noticed that when I type my website on google, just under my site there are 2 blogs that is talking about my website with fake reviews saying that it is a scam site and there is like 100 anonymous comments saying thank you for your article and things like that.

Since I started the site I have only 6 customers and I'm in contact with them. could it be a competitor who is trying to reuine my reputation ?

What can I do to stop that.

Make couple of more sites/blogs (good reviews about your service ) and outrank them. Push those site to page 2.

Easier said than done. But if he is competitor, this is the only solution that comes to my mind

1) Contact the blogs that have posted these reviews and address the issue with them directly - have you tried this yet?
2) Check the WHOIS of the domain as well as check what other sites are hosted on the same IP, see if you can spot the competitor. If you can identify the competitor, screw them back with the same strategy - only you quadruple your efforts, if they did it with two blogs, you do it with 8
3) Do what @jayabro has suggested, try to develop a few sites that write positively about yourself