Municipal Corporation Gurugram [MCG] — property owner name not changed

Address:

Gurgaon, Haryana, 122001

I buyed new house in sector10A in october 2016. I filled the petition to change the owner name and given all documents like allotment letter, electricity bill, registry copy, and ID . and MCG provided me the letter that the name have been changed but now when the property tax came the name on that was of the previous owner. when i gone back to mcg they said that we have done our work and the private company is having the authority to change the name online .so its a request please change the name on the id as soon as possible.AND i am attaching the pic of the letter provided by the mcg.
From:-NIRMALA YADAV.
H. NO.:-904 SECTOR 10A
PROPERTY ID:-149C1264U477
mob. no. [protected]
e mail :[protected]@gmail.com