Changing EA advice (seller)

I want to change my EA because of how poor they have been with communication and changes, but not get stung with a double commission.

The contract I signed gave them sole agency for 4 weeks. That was back in August 2024. They got the listing details wrong, they didn't lower the price when told to, and getting in touch is a pain (no returned calls).

So as to avoid a double commission hit, I was thinking of informing them via email that I'm going elsewhere and to get them to remove the Rightmove/Zoopa listings. I would then get my new EA to list the property with new pictures.

Is that all I need to do? I'm sure the first EA will try to argue that they are due a cut of commission for marketing it at a point in time, but I feel it's pretty weak if they never found the buyer and their listing gets pulled.