Why would t mobile have a different social security number on my account

I am not sure. I finally got competent help over the phone.

steve.m.shapiro wrote:

Actually I went into a T-Mobile store and they told me I had to write some letter to New Mexico to get my SS number fixed. 

SAME. Today I just did that. Did writing the letter even work??

Actually I went into a T-Mobile store and they told me I had to write some letter to New Mexico to get my SS number fixed. 

I have just run into the same issue as marie1980e -- My SSN and all other info was good when i signed up but NOW they say it doesn't match up and i dont have access to my account - they need me go to store and bring ID's.  I smell something very wrong a GOOD REASON TO CHANGE SERVICE PROVIDER - clearly Tmobile is hiding the fact of possible security breach!  My lawyer will be involved on this very soon!

With all the data breaches and info theft going on T - Mobil executives, when someone calls customer service and all of a sudden the last four digits of their social security don't match anymore (even though they matched before for years) because their social security number has been changed, THAT IS A CAUSE OF GREAT CONCERN AND TOTALLY UNACCEPTABLE ! Is your server malfunctioning, or the system has been breached by a software which jumbled up customers' information in the process ? What good all the service you provide would be IF YOU CANNOT PROTECT OUR IDENTITY ! IF THAT IS WHAT'S GOING ON.