If you had an agreement (oral or implied) with your brother where you allowed him to put the telephone account under his name because his credit was poor and as a result he has incurred a debt close to seven hundred dollars ($700.00) in your name, he is obligated to pay off this debt one way or another. Meaning, if you want to protect your credit, you should do the following:1. pay off the telephone account in full and close it out so that no more charges can be incurred upon it since it is in your name;2. work out a monthly payment plan with your brother to pay you back where he also pays you interest on the amount you paid down. Make sure you have a written agreement signed by him and dated concerning this obligation;3. if he is unwilling to do so, small claims court is your option.Good luck.