Please is there anyone who has the bitcoin telegram link so I can join the chat forum and the official group?
I don't think there's such a thing as a "official" Bitcoin telegram group, nor is there an official "Bitcointalk" telegram group ( as far as i'm aware.)
There are however lots of crypto groups out there, who usually give calls/advice etc. ( Beware that 99% of these are doing it to somehow benefit themselves, shilling/pump&dump etc.).
Take a look here for some good groups, which are related to BTC.
https://tgram.io/