Ravi Kumar, Vodafone — unable login to my account showing invalid loan account number

While i am going to change my password after giving details like
Username: [protected]@gmail.com

Loan number:[protected] and dob

I am getting message "invalid loan account details"

I am expecting loan account number and loan number one and the same.
If not let me provide the loan number.

Please provide the toll free customer care number.

My contact: [protected]