Sorry, But I think he was smart enough to not to share his btt profile with me. He directly contacted me through telegram.
That's the problem with showing other modes of contact outright, with these you will be targeted by a lot of people who will want to remain hidden from Bitcointalk. So maybe the next time you will sell something in the marketplace the best thing you can do is mention that you are only interested in talking via PM or if they want to get your TG they can ask it via PM. Rank restricting your trade is also helpful as people who may be using farmed accounts will try using their main account to contact you.