Daily noise nuisance

My surrounding neighbours have recently changed to Cortac Security and I now hear random beeps emanating from their properties multiple times a day.

One of the steps that I have taken to rectify this daily noise nuisance is speaking to the owner of Cortac. On the phone, he advised me that he would consult with the technical department and then phone me back. He never phoned me back, so I called him and he promptly cut me off! This is no way for the owner of an organisation to behave. How childish and unprofessional.