they could take you to court if they wanted to.
It will cost them to do that.
In any event, it is pointless because this is just plain not nuisance.
All dogs bark. It is their purpose in life. What they should not do is bark continuously for long periods of time. Usually more than twenty minutes continuous barking is required repeatedly.
I wouldn't worry about this. Just ignore them. The Council clearly are not interested and neither will be the courts be.
This is just the usual twaddle that people who have nothing better to do come up with.
Can I clarify anything for you?