Thumbtack Bogus Leads-Make up referrals, take your money Nationwide

When I signed up for Thumbtack leads were trickling in. When I decided to stop responding to the leads-I had referrals in an abundance!  They wanted me to keep paying so they made up leads so I would not stop using them all together. Many of the leads had the same name or needed the same service (one that is peculiar and I have never had that request)_ but with Thumbtack I recieved it twice. 

They just started giving me more leads right when I was out of money in my thumbtack account.  

I just have a wierd feeling about this and I wish someone would look in to it in depth because they are doing something janky.