Telegram does not, by default, save transcripts of your chats.
therefore the only way for the chats to be “on a hard drive” is if you saved the exports of the conversation which you clearly did not do, or else you would have used THAT as evidence for this scam report and not just pictures taken by you, during your chats.
Did I say the opposite ? I also work on telegram, I need to keep track, I've been looking for this damn proof for an hour, sorry for taking so long, but at some point when all the evidence is there and some son of a bitch is going to keep scamming people and nothing is done about him, and he's not even going to pay back the amount he owes me, understand that I also need to breathe.
In addition in one of these messages he shares confidential information, this is also punishable by law.