Electricity Bill — wrong bill generate

Address:

Ambala, Haryana, 135003

My account no. [protected] with u. H. B. V. N ltd jagadhri circle y-32 had generated wrong bill for period march and april
. The bill has readindg 69070 which is wrongly calibrated as meter reading was 59070 which make a difference of 10000 units of extra electricity.
My bill was supposed to be of 3000 rs but bill was of 83000 rs
I had given a written complaint to check it but there was no response of this.
Please check and take action as soon as possible.