EDF Energy have a range of different contact options available. Their online help centre provides extensive information about a range of different topics. You can find the EDF online help here https://www.edfenergy.com/for-home/help-support/help-centre
You can send a Whatsapp to EDF, just click here to start a Whatsapp message
To send a text to EDF Energy, just create a new SMS on your phone and send it to 07481 341 928
Their Whatsapp and SMS options are monitored between 7am-11pm Monday to Friday and 8am-8pm on weekends
On the EDF Energy contact page, you can start a live chat which is available 24/7, just go here https://www.edfenergy.com/for-home/help-support/contact-us
If you want to call EDF Energy, their contact number is 0333 200 5100 their telephone lines are open 8am to 6pm on weekdays and 8am to 2pm on Saturdays. According to EDF, their busiest telephone times are on Mondays and between 8am to 11am on other weekdays so it may be best to try and call outside these hours.