Barking dog at night

My neighbour Mrs Dawn Parrish of 12 Brisbane Close, Langley green, Crawley, is letting her dog out into her garden to create an unbearable noise via his continuous barking. I am a registered nurse dealing with patients and I am constantly tired by this dog barking at unreasonable hours of the night. She is out sometimes 2-4 times in the early hours night. I have already spoken to Mrs Parrish in a nice manner about it and she said she will resolve the issue but this has not. The dog is out 2-4 loudly barking and she does not care to stop this behaviour. I have suggested a soft muzzle or training it but this has fallen on deaf ears. This has come to breaking point where I have now decided to shout profanities at them once I've woken up by this irritating barking dog