Please confirm your settings are correct.
Settings > Discussion:
E-mail me whenever
__ Anyone posts a comment
__ A comment is held for moderation
__ Someone likes one of my posts
__ Someone reblogs one of my posts
__ Someone follows my blog
click "save changes" when you are done.
You have two separate email address settings at WordPress.com. Please confirm them as well.
Blog notifications for the admin (like comment moderation, Likes, new subscriptions, etc) are sent to the email address at Settings -> General in the Dashboard.
Personal notifications (like comments on your post, subscription emails, and upgrade renewals) are sent to the email address at Users -> Personal Settings in the Dashboard.
Note: Issues Changing your E-mail Address > http://en.support.wordpress.com/email-address/#issues-changing-your-e-mail-address