How Do I Block i.glide.me Text Messages

Every day I get a text message from 617-372-2303 about joining something
called Glide. It directs me to a web site: i.glide.me

I tried blocking the phone number, but it seems to be getting through. I tried
e-mailing the company but all I got was a robot response.

The Feds will do nothing about text messages, but I consider this to border on
harassment.

Any ideas ??

Thanks and Happy New Year,

Richard S.