Thanks for the tip. I once opened a dispute because seller didn't want to publish my guest post, he asked me to close my dispute and we will settle everything without customer support, but I didn't believe him.
Don't believe the words,just beleive the actions!
First of all avoid dealing with someone for trading on social media like telegram,just use the official bitcointalk PM so user can never delete them even if they do,you have some proof to show to the community.