Can I associate my Xbox email with multiple gamer tags

I have a very old Comcast email account associated with my Xbox Live gamer tag. I have tried multiple times to change that password, but the account no longer exists. I have another gamer tag associated with my MS Account, but it doesn't have XBOX live.
I could change that password, but now I don't have xbox live. How can this be fixed? I have tried multiple scenarios without luck and am paying for Xbox Live but unable to use it.

You can only have 1 gamertag on an email.

first of all you can not have 2 different gamer tags on one email address so there must be a different email address associated with the original gamer tag your best bet would be to contact xbox support at support.xbox.com/contact-us and give them your gamer
tag and if they can verify your account they can give you the email address associated with your original gamer tag

no one else can have the same gamer tag as you so there is no way for them to have suspended someone else with the same gamer tag.

you may want to double check the email address that is associated with your gamer tag that is the email address that they would have sent the email to.

if you are on a xbox one you can check what email is associated with your account by signing into the account and going to settings and under the account tab and go to sign in security and passkey and it will tell you there what email is associated with
that particular gamertag.

I'm having a different type of issue. The gamer tag that is associated with my email is wrong and I've never used it before. However,on my xbox, the correct gamer tag is there as well as the correct email address. How do I fix this?

Thanks Clint