Fee for changing a fee free booking
I booked a CDG-LHR-JFK-LHR-CDG ticket in C class a few weeks ago - ticket rules where changes allowed for no fee. Went on line to change the LHR-JFK-LHR sectors and they want additional taxes of €15! Called BA and they wanted £25!!
Is it normal to charge additional taxes for a change in booking dates (same flights just one week later - no extra stopovers)