Change name for Electricity, water, property tax bills?


Recently i buy a flat at Hyderabad on Loan. Now the flat is in my Name. All the below Bills are coming old owner name, whom should i contact and what are the documents required for the changing name. I need to pay cash?

1) Electricity Bill
2) Water Bill
3) Property tax Bill

If any other bills, i need to change my name, please let me know.

Thanks for your spending time and answering my doubts.