Can I merge xbox accounts?

I don't know if this is the right area for this, so I apologize if I'm wrong. I bought an xbox 360 off of ebay a few months ago. I made an account on it, with the same email I use on my surface tablet, but it won't connect. So I made one online hoping It
would say it already exsists and I could log onto it from my tablet. Now I have 2 different accounts, and I'm getting ready to register my destiny beta code, and since I have to do it online I don't want to end up registering it on the wrong account. Does
someone know what I should do?

:)

 

Can I merge avatars?

So here's the deal:

I had an avatar on my xbox 360. When I signed up for xbox live I was forced to start a new avatar and now my old one is just hanging out on the box. My 1st avatar has all of my game data and achievements saved to it. So my question is this:

Can I merge the 2 avatars and save my data or am I just screwed?????? Please help me. Thanks.

 

Can I merge avatars?

It's also not possilbe to transfer gold membership and MS Points from one account to another

 

It is not possible to merge accounts. However, you can do an account swap on
http://xbox.com/accountswap