Telegram member management bot

I need a bot that will allow users to join a telegram channel when they have paid, and automatically remove them when they have cancelled their subscription.

I have two website examples of people who have already implemented this:
sublaunch .co
whop .com

They allow members to create a product on their site, then they connect their telegram bot to the members channel like below:

Step 1.) End user creates a private telegram channel themselves
step 2.) User adds the membership bot as an admin
step 3.) A code is generated on the website, the user types this into their telegram channel and the bot connects the channel to the users product.

When someone buys a product, it allows them to join a telegram channel as a perk of the subscription. If this subscription is cancelled, it removes the user from the channel.

I believe this is done by collecting the users unique telegram ID and storing it in a google sheets or database.



I'm already working with a developer who can handle the website subscriptions via stripe and is very capable of working with API's. He just needs the telegram functionality/bot to be built.

This is not just for one user, imagine it's designed for a marketplace so the bot needs to be able to link to multiple users telegram channels. Please look at the websites listed.

I have also uploaded images showing how the integration is done on the end users side.