Changing flights, can i get a refund on my reserved seats.

Hi,

I booked flights to London and reserved seats. But now I need to change my flight.

I'm being charged €30 to change the flight each way (fair enough), but i'm also being charged €5 each way to reserve another seat.

Any chance of a refund on the seats I originally reserved as I won't be using them now as i'm changing the flight?

Thanks.