Try to signup to paramount need coupon code

Debra Hosey wrote:

Everytime I go to log in to tmobile account to signup for the paramount promotion I get this 

"The MSISDN is already registered to another IAM user account" I have not had a tmobile account in the past, Have not logged into Tmobile prior to trying this promo.  Wass on hold with "customer Service" for over an hour and finally gave up,

Are you using the account login link from the following webpage?:

https://www.t-mobile.com/offers/paramount-plus-deal