Uhbvn — wrong bill due to wrong reading

Sir,
Wrong reading mention in electricity bill. Make 1100 units by false reading, reading on 5-sep-17 "43486" unit. But as per bill on 7-aug-17 "43803"unit. Now i am suffering this issue, no person help me. Want some money by employee. Who is responsible for this issue. Please resolve these issues.
Details are below...
Account number - [protected]
Bill number[protected]