I really have a hard time thinking that you're being hacked via RF...

I'm thinking more along the lines of trojan...

Do you have updated antivirus?

If not... scan your PC @ http://housecall.trendmicro.com/
Then get the cleaner from moosoft.com and update and scan with that.

I'm very curious how they came to the conclusion that you were being hacked via RF... did they explain to you why they thought this? Did they examine your computer? Or did you just tell them you thought you were hacked and they gave you that answer?