Rajdhani / Yamuna Power [Bses] — Incorrect bill given by BSES, no Units allot to the amount paid

BSES has sent me wrong will, they have not allotted unit amount paid by me.
I have paid two provisional bill but no unit allotted against it and they have taken reading after 3 month and unit is 1646 they have calculated as below
for 1st 594 unit @3=1782, for next 594 unit @ 4.50 that make rupees 2673 and last one for unit 458 @ 6.50 =2977 and total amount is 9377.6 they have deducted amount paid by straight forward without allotting units against my payment so net bill payable to me is 9377.6-2815.87= 575o.
if they have allotted against my payment than nothing will fall in last category of 6.50 so round figure the bill of approx. 3000 is reduced straightforward.
lets take an example if i take 3 per unit for the amount paid by me so unit against will be 938 units so after reducing it from 1696 i have to pay for 758 units but they have not allotted single unit, they have deducted amount straightforward, their is nothing like this in BSES act that they can deduct straightforward the amount paid by me. SO i want BSES to allot unit and sent me correct bill.
I have given written complaint to BSES Rajdhani but no proper action taken and they insisting me to pay the bill and they are asking mw to pay the bill and nothing can be done. At the point view of customer this is totally incorrect