In a building like this I would expect cleaning to every two weeks, ideally weekly, though with conscientious and considerate residents ( and no adverse factors eg a nearby road or building site) monthly might be done.
The question is the standard and cost not so much frequency. I'd ask often are you cleaning and what are your cleaners expected to do as it seems haphazard.
Whatever they decide to do it certainly should not be adversely affecting your home it's amenity and value.
As sad as it sounds, I'd take a day in the week as a benchmark and note changes with photos then and specific incidences. When the bills arrive at the end of the year you can compare what you you paid for with what you got.
In a case where residents are not doing manual jobs at a work, an hour on the sofa might be better spent on the stairs with kit and a podcast, and save the money.
Based on the information posted, I offer my thoughts.Any action you then take is your liability. While commending individual effort, there is no substitute for a thorough review of documents and facts by paid for professional advisers. More ramblings atleaseholdpropertymanager.blogspot.com