Account associated with 2 email address and multiple customer numbers- how to remove old email address?

My account seems to have 2 email addresses associated with it. I can log in with either one of 2 email addresses and see the order I placed in December 2014.  The difference is, one email address has 2 customer numbers associated with it and the other has 6. They share 1 customer number in common.

This is very confusing. I would like to eliminate one email address and combine all customer numbers to the other email address. Hopefully Customer Service can do this. Can you do it or tell me how?

Thank you