You should speak to your neighbour about the problem as they may not be aware that it is happening.
Unless there is any evidence of the dog being mistreated then the RSPCA will not be able to help. If you do believe that the dog is being mistreated, you can contact the RSPCA via their telephone number 0300 1234 999.
The noise could be classed as a noise nuisance so you would need to report it to the Environmental Health department at your local authority.
Please see the website in Related Information to report a noise complaint to your local authority.
