Please follow the following steps in order to overcome your current problem. I guarantee you that this would work and all would agree with it!
Step 1: Disconnect the line if its still active
Step 2: Pay the dues (you like it or not, its your responsibility)
Step 3: Try and sqeeze this money out from those who used the phone line (Which I doubt you would receive)
Step 4: In future, when you leave your current apartment make sure to disconnect/discontinue all bills under your name
Step 5: You will not post this kind of questions on QL (Joking)
Overall, you did a mistake and you pay for it.
Please follow the following steps in order to overcome your current problem. I guarantee you that this would work and all would agree with it!
Step 1: Disconnect the line if its still active
Step 2: Pay the dues (you like it or not, its your responsibility)
Step 3: Try and sqeeze this money out from those who used the phone line (Which I doubt you would receive)
Step 4: In future, when you leave your current apartment make sure to disconnect/discontinue all bills under your name
Step 5: You will not post this kind of questions on QL (Joking)
Overall, you did a mistake and you pay for it.