Hi, there. I am web developer. I've worked with telegram bot API ( can show you my own bot it's integrated with instagram API). I've been working on crypto currency project so far where etherscan API was applied to. I believe u need webhook based bot which interacts with etherscan API (might be other one if u have it on mind). I've checked bot that you provided in description. I'd prefer to implement this bot with python (may be nodejs). Let's have a talk.
EDITED -> Sir, my offer is good. I know how to do this and cost is fair. Really, it is 1k project as minimum.