If you can add real telegram users please reach me via PM. I don't want bots, i mean real users from another group.
That is quite risky to your group, if a user is added to the group without his consent, he can report your group and your group might be disable, if you have a good project people will flock to your channel, no need to hire an adding service, and besides you can do it on your own.
yes itss too risky they can leave and report the channel if they add to the groups that they want. But its possible to do there are many people offering that service .
having many members will not help the project it can only attract new users to invest because they think they are many people follow that project which is not.