Avail cleaned and ruined my account.

Scammer's profile link: http://www.sythe.org/members/452741-avail.html
Explanation of the trade: I paid 26m 07 gp and supplies for Avail to get me 80-90 range in his skilling service.
service: http://www.sythe.org/oldschool-rune...killing-services-affordable-hand-trained.html

Pm from Avail confirming it was him: http://imgur.com/F9mnrmy

Skype convo confirming I traded the correct player in game: http://imgur.com/wPkdzOF

How they scammed: Didn't complete service paid for, Got my account 22 defence when I wanted it to stay 1 and cleaned my account of supplies/cash

Skype profile ID & conversation pictures: skype ID: http://imgur.com/0j9KeAw

Skype album: http://imgur.com/a/NDxwo

Bank after waking up: http://imgur.com/ISMq9UG

Other relevant trade screenshots:

 

there's no way to prove that he gained you these levels to be honest, you could be aswell hacked, he has to refund you 26M through if service wasnt completed.