When I did get through, however, they were very helpful and changed my flight for free to one at a similar time that had been diverted to Charles de Gaulle airport. I felt that my morning had not been completely wasted.
Then, yesterday evening, I got a second email from EasyJet. The strike was no longer on, my original flight was no longer cancelled and I could ignore all the information that had been sent to me.
Apparently EasyJet is just a little bit to efficient to operate in France.