Standard Bank ATM alarm - noise disturbance

I would give it less than a single star actually. For the past four consecutive nights, the Standard Bank ATM's alarm goes off, exactly at midnight. The incessant wailing lasts for an hour and severely affects the quality of my sleep. I went to the Stop n Shop Centre this morning, where the ATM is located (in Peerless Park West, Kraaifontein, Western Cape). I initially thought it was a business alarm, but the two shopkeepers I spoke to say that it is likely the Standard Bank ATM, since the alarm goes off during the day as well sometimes, emanating from said ATM. Please investigate this matter. It is driving me to the point of insanity. I just want a decent night's rest!