FireRTC worked for me yesterday. Over two hours of their time wasted on a single call. Fun fact - I didn't even use a VM, just pretended to try to follow their instructions :D One said they are in Texas, another one that they are in California, another one said the're in India :D They only tried gotoassist.me, no other software.
The 888-609-0405 number seemed to be a very populated call centre, then they transferred me to a technician in less noisy room/office.
additional numbers they gave me:
888-287-1902 customer service
888-287-7381 technical support
Website (when I finally started pushing): www.webtm.net
Company names: Mytechbay (First mention), Ewebtm (Billing, mentioned when they took my "card" info)