B. E. S. T. Undertaking — online name change on best bill not working

Address:

Mumbai City, Maharashtra, 400009

Sir,
I am shailesh vishnu tondwalkar son of late/shri vishnu tondwalkar, residing at 1/c, dossa building, navroji hill road no.7, mumbai, pin-400009.
I want to change the name on my electric bill my consumer no. Is 86307175, which is on my father name now i want to print my name on electric bill instead of my father name.
Sir, i had fill - up your online name change application on your portal, after filling all my information and uploaded all documents which your office is required, i had validate otp, agree for your terms and condition then i have submitted my application.
Sir, after submitting my application there no further processing or new screen appear. Sir, please guide me in this regard. I had also talk with it div with nilesh as per his guideline i have completed my application and once again submitted but condition remain the same.