I received a phone call from my ex-sister-in-law in North Carolina stating that this law firm called her and informed her of an outstanding debt in my name giving her all the details they say they have. Apparently, they have been harrassing her to pay this debt. I myself am unaware of any outstanding debt and have not been contacted by this firm. I am not sure what legal practice this is, but it seems to me they are just calling people and asking for money from anyone they contact. I have contacted this law firm and they cannot provide me with any information at all with regards to this account, since I do not have a T-mobile account. I am concerned about my credit and unsure how to make this firm stop calling people and telling them I have an outstanding debt.