
My roomate suddenly left 8 months ago and she left me with huge amount of debt (rent, gas, etc). Since all the bills were in my name I paid most of them all and i moved to a new place now. I was thinking i can start a new life but i just got a call from the internet provider (BB) saying that i still have to pay the bills even though i had moved since 7 months ago. I paid the bills until the month i moved and i also returned the router plus all the cables that they gave to me. I also had called them regarding the cancelation, but their argument since i haven't sign the cancelation paper they still charging me the monthly base.
Now I am thinking of not paying. I have not tell them my new address and i am thinking about changing my phone number since that is the only number that they know. Do you think this company will pursue this case to court, or put me into criminal record if i don't pay? The unpaid amount is around 38.000 yen and i think it will increase since its monthly base. What do you think should i do?