sir, my telephone no. is 01765-253343. i got that connection/no. is about 10 years ago. my telephone set is very old and defaulted, dialing buttons is not proper working so i have faced many problems. regarding change of that telephone set i have many requests to sdo, j.e. to telephone exchange office - mandi gobindgarh (pb) but till no effect.kindly change my telephone set as soon as possible and take action my complaint . THANKS...