Prepay meter in unoccupied flat next door keeps beeping

Hi, the flat next door to me is unoccupied and yesterday it started beeping continuously and I can hear it through my walls. The same day I had my broadband fitted and the engineer said the noise is coming from a prepayment meter next door that's run out of credit.

It's a subtle noise, but it's pretty annoying as it's high pitched and nonstop. Will the meter eventually stop beeping? Is there anything I can do other than wear earplugs whenever I'm working from home?