when does TMobile report to credit berues after canceled service?

[Jessica W]

i cancled my tmobile service and they said i had 4 payments to make in 2 months to finish paying off the termanation fee. if i cant pay it off with in the 2 months but am making small payment to pay it of will they still report it after the 2 months is over are will they give me more time. the bill is only $350 and i am able to make 20 dollar payments every 2 weeks