I paid for Avast's premium antivirus and total protection package. It stopped working on my computer. They tried to tell me my computer was the problem, which is bullshit, I've never had problems with any other system. They then took $80 out of my bank account for additional tech support, which I never agreed to (and they didn't even fix the problem!!) Avast is great, until you actually need them for something. Totally avoid this company.