Telegram- Stripe


Where to get the information of *Telegram username* for those made payment in Stripe .
As I follow the video of Automatic Stripe Payments Notifcations ,it seems has no username information to be added.
I was confused when someone made payment to subscribe my channel as I dont know what's their Telegram Username for me to send the join channel link.

Example :
New Stripe Charge
By irish
Charge amount : 200
Email : [email protected]
Phone : 011-12345678

Looking forward for any advice on how to figure out the username so that I can send join channel link to my new subscribers.
Thank you