Q: Text Message Scam?? Help?

you have done what you should after giving up your credentials = change password

the SCAMmers have migrated to messaging from emails - there is a SPAM report feature in iMessage > Report iMessages that look like spam or junk - Apple Support

Phishing & Other Suspicious Emails 

  Identifying legitimate emails from the iTunes Store - Apple Support 

  Identifying fraudulent "phishing" email - Apple Support

unfortunately, you have tipped off the SCAMmers that your email address AND Phone Number are  is valid, expect more SCAMs/SPAMs

EDITbyÇÇÇ

you're welcome.

read about HOW Apple emails you in the links above - text = NEVER