I think the conversation from telegram or any 3rd party conversation is not enough to tell that he is scammer you must provide a proof that you ask the telegram account name here on bitcointalk like a screenshot from the conversation in your Bitcointalk messages(PM).

If you just input the screenshot from the telegram conversation without telling us how did you get his telegram account we can not say that he is scammer.

As what I look from the image the name you are dealing is yolo, not @ambosss look at the image again.

As I told you recently that dealing without escrow to lower rank member might be scam you should always use trusted escrow to deal with low-rank members here on the forum