Hindustan Petroleum Corporation [HPCL] — registration problem

Respected sir,
I am vinay kumar from kishanganj, bihar. Actually sir i don't be able to register for online hp gas. Sir i tried many a times for registration even i fill all the information very correctly. Some time it shows that you have given registered, consumer number sometimes says, that the email you have entered is already being registered and sir the fact is the i never registered with that email or that particular consumer no. I think it may be happens because i have tried many a times for registration i don't know sir plzz sir try to solve this problem as much as possible.. I will very thankful to you...

Consumer no. 627212