Mahadiscom / Mseb / Msedcl — faulty, excess bills

We have been receiving excess bills at our native place. The house is locked almost through out the year. Rarely we visit there. Only a tube light and 2 bulbs are used whenever we visit there. There is no chance the units consumed can go up to even 25...Still we get bills like 10 thousand and above. Every time we have to complaint for the same. Despite all this we have paid Rs. 600 and above twice. This time we received bill of Rs. 1290. My father is a senior citizen and he has to call every time to several offices for these issues. Details of the bills along with dates, unit details, bill amount is mentioned in the attachment. Could you please help us out. Thank you.