What Joanna said. Dots are irrelevant in Gmail account names. DH and I have a joint account and an old couple in MI has the same email but with a different service (like yahoo or MSN or something) anyway, we got their emails from time to time. I found their daughter (they are elderly) and let her know and she corrected the situation.
So it could be someone with the same name but with a different email server.
Change passwords to be safe, but my guess is someone is entering the wrong email into these sites. You might see if there is a place on the emails to report that you did not sign up for this service.
Somewhere in settings allows you to change the name associated with your email, but honestly, it doesn't matter, especially if you arent using it. Ours somehow have all sorts of weird combinations of our names on there.
"Dots don't matter in Gmail addresses - Gmail Help"
https://support.google.com/mail/answer/7436150?hl=en