Hacked by fake Avg site

I Have to tell you about my problem i had pop up problem. I have free version of your Anti virus program to you site called the #(844-207-9693) on what i thought wss you site I talk to tech for about 1 hour gave them promising to remote access my computer she download and scanned my computer
Then i was told in order to fix my computer i had to pay $180 1 time fix
$299 2 year plan
$399 full sevice plan
I refuse dropped the price to $99
Then to$29.99
My computer is been hacked
I tried to look up avg support and not AVG
I wanted someone to kmow before Avg get a bad name
I just wanted to let you know .
My be you can help or warn others .i going to wipe my computer clean
Thank you
Osborne L.Taylor Jr
7578878366