Company keeps adding me to webinars I didn’t register for

[agr]

a Company keeps adding me to their events. I’ve never asked to register to. They send out the links under multiple different email addresses and it feels very spam and been going on for about 3 months multiple times a week.

I’ve been personally contacting them asking them to remove me as as well as canceling the registration.

Any advice on how to get off this group’s master list?