mg1973, have you gotten resolution on your billing issue yet? If not, please e-mail me and I'll send you the contact details for Mr. Anand, the GM.
I've spent perhaps 60 nights at the Maurya over the past two years, most recently last Friday. After getting over some initial difficulties on how Platinum recognition should work in the ITC-One part of the hotel, I've never had any difficulties since.
In the last six months, I've tried most of the other major hotels in Delhi (Intercon, Hyatt, Marriott, Oberoi, Taj, Ashok) and still have not found one I like as well as the Maurya.