cannot change password

I am a former Comcast account holder who moved out of country.

But, I still use my Comcast email.

Last week I was directed to "change my password".

Uusually, not a problem but the Comcast directive says a verification code will be sent to my cell phone in the account.

The problem is that I also terminated that cell phone number when moving.

After 10 telephone calls to different departments at  Comcast,  all claim that they cannot access a closed account to update to my new cell phone or give me a temporary password to access my account.

 Without access to my Comcast email, I cannot view any of my folders or my contact list.

There MUST be a way for someone to get into my account and help me out.

Thanks in advance for any feedback.