Hey,
In case you have not found the correct contact number. May be the below info would help u.

Call Center 991
Our KAHRAMAA call center is available to assist you with general information concerning your bill payments, new and current connections. It is a 24 hours electricity and water emergency and response center; you can report your problem or concern and follow up the progress of the response.
The 991 call center uses an auto-response system to help you minimize queuing time on the phone and speak to a call center agent. You must have your electricity and water number ready to use this service.

Call 991, KHARAMAA's 24/7 Electricity and Water Emergency and Incident help line; the Call Center opens 24 hours a day, 7 days a week.