I spoke to an IYogi support person as my files were Encrypted after they accessed my computer. They called me back and I asked if they had the key to Cryptolocker, he would not answer the question but wanted access to the computer.
I continually asked if they had the key as I didn't want him on my computer again. He would not answer the question and hung up.
WARNING
DO NOT LET THEM ACCESS THE COMPUTER AND DON'T USE IYOGI SUPPORT.