Contract mobile?

I have got one connection with three and want to try another network but keep getting declined this was about a month ago im going to try t-mobile tomorrow but the problem is i have got a prepaid master card and they need a card to house check will it make any difference should they still be able to do my check with this cardim 18 so i can do it myself
Answer
Do you have a family member or friend who could take out the conract for you??