You can make payment through online transfer by using Electronic funds Transfer (EFT) Option to e& account as per below details:
Name of the Beneficiary: The Emirates Telecommunication Corporation (Etisalat)
Bank Name: First Abu Dhabi Bank
Account No.: 1850059750
IBAN No.: AE560350000001850059750
Swift Code: NBADAEAA
Branch Name: Khalidiya Branch
Bank Address: Abu Dhabi, U.A.E
Please mention your e& account number under Transfer.