Telenor Network

I am living in Rawalpindi and job is in islamabad. i was call on helpline 042-111345100 & 051-111345100 to registrar my complaint about telenor network. but the person who was there refuses to registrar my complaint. i still problem of sim network. my 2 telenor sims in once disappreared the signals, how is it possible that to demage my both sims in one time. I thought i may by from telenor company that punish me and force to purchase new sim of Rs. 500/-. The person of customer service said to me you purchase new sims, but my question and complaint that how it was demage telenor sim network. i used telenor sims from long a time and i was not replace telenor from my mobile.
Therefore it is requested replace my sims without any cost. Thanks