my clean pc attempted scam Internet

I contacted these people and all I got was a sales pitch for services that when all said and done, cost as much as a new computer. their program does nothing that with research, that I can do myself. Yes they run the scanner which showsthat you have aprox 3-500 files that need to be removed. I can find and remove those same files from my os. same old song they can do this, but you will also need to have this& that and something to make that work. to repeat, they wanted enough money to buy a new computer, just to fix it. total rip off