My go to number, always remember it from the top of my head 
http://www.itassists.com/
http://vsupportllc.co/
number: 8558034636
Fast response time, they have a facebook page with 4.9 rating
they use GotoAssist
Just say you have a popup or you have a problem and found them on their website.
he said they only provided services to existing customers. what is that supposed to mean? XD
@ultraaxvii#25902 Yea… don’t know they always say that when they think it’s a prank call… You could convince them and be like it’s your first time calling, they should then proceed with the GotoAssist stuff