This one is resolved.
I phoned T-Mobile this morning,it is there number.
Still confused though.They called me and I pressed the green answer button and got a message "If you want to learn what this is phone 150".
Confused?Yes me to.
The young lady on the phone said do NOT answer this call,it is T-Mobile ringing you to ask how you like your new phone and service.If you answer it you will be charged?
I am still confused why T-Mobile would ring me to ask how I like my new service and when I answer the call get an auto message for me to call 150.
Be warned T-Mobile charged me 34p for this call however they will deduct it from my next bill?
Mmmmmmm.This dont sit tight with me,something amiss.Sounds to far fetched.