Brihanmumbai Electricity Supply & Transport Undertaking [Best] — difficulty paying electric bill

Address:

Colaba, Mumbai, Mumbai City, Maharashtra, 400001

I am in usa, earlier my son used to make best electric bill payment. He has shifted from that place and when i try to log in, it does not allow me. Now i have my own id, phone number which are different from my son. Hence i am not able to make payment on line. Earlier there was a facility making payment without registration, which does not prevail any more. Utter gujarat vidyut co and adani gas, torrento power etc. Have easy payment facilities-one facing no trouble. Why best has removed payment without facility? Isn't it time to remedy this difficulty at the earliest? Help me to make payment on line.