PSPCL — Regarding OVER BILLING Due to defective Meter

I have one room set at Baltana (Zirakpur) My meter was installed at Electricity Poll out side my home. In night Truck damaged my meter by hitting it while reversing . A complaint was lodged with department . Line man come and checked and found that even after disconnecting the out going wire meter still running. On his advice department replaced the meter and as per new rules my meter bill was coming NIL.

Now department is saying that I have to pay the charges' amounting to Rs. 70, 000/- as they have got the meter checked and found ok. They have removed my new meter installed and I am Without power.
I require only one bulb in night as I am daily goes to my duty from 7 AM to 7PM.
Before damaging the meter I was getting Bill less than Rs.500/- of two months billing systems and was not defaulter at any time.

Please Help.