My Clean Pc attempted scam for more money, Internet

I saw the My Clean Pc ads on tv and since my computer was extremely slow and freezing up i decided to try them.  I paid 39.99 for them to run the scan and supposedly fix my issues.  When you call to activate the software they have a high pressure sales pitch to try to get you to pay a very  expensive amout for a technician to fix what their software did not. They said if you don't get the expensive tech help your computer will still have issues. I am so mad, i feel like i paid $39.99 for nothing. They should tell you that up front and not after you have paid them. I feel ripped off.