How to remove your Care.com account
From their PP [ https://www.care.com/privacy-policy-p1013.html ]
If you no longer wish to participate in our service you may contact Care.com Member Care [ https://www.care.com/contact-us-p1011.html ] and request that your account be closed. You can also close your account directly by visiting the “Membership Information” page under “My Profile & Settings” in your account.
Helpful Trick: Removing online data
Helpful Trick: Remove third-party logins
If you signed up for Care.com using a third-party login such as Facebook or Twitter, you probably want to revoke all access from Care.com. Click here to find out how.