Bajaj Finance — mobile register is rejected

Address:

Srikrishna nagar, Hyderabad, Telangana, 500045

Hi,
My login id: 87401166
I already registered my number in my bank account as well as your bajaj fin service. Today i am received one message from bajaj fin service. "loan account number: 400dpfes056655, has been rejected by your bank due to valid registration number not available. Visit your nearest bajaj fin ltd. Branch for resubmission of mandate. If the mandate is not registered in 30 days, additional service charges of rs450 will be levied to your loan a/c every month till mandate is registered".
What should i do? Please resolve this issue. Please make me call