If someone has a noisy alarm or it is constantly going off then it is usually an indication that there is a problem.
Either the backup battery is going flat, a sensor is faulty, the external siren is rusting out and the tamper sensor is coming loose or the operator is making mistakes.
Either way this is a good referral for me because I can quickly diagnose what’s going on and take remedial action to restore peace and quiet.
So if you hear an alarm in your area going off regularly, particularly at morning going to work time and evening coming home time.
Then pop my business card in their letter box, when next out walking the dog, etc.