The company didn't give a damn about complying with the laws and fulfilling its duties.
For 5 years, the house was not serviced normally, there were constant wars with them for cleaning, but as it turned out, they were not in much of a hurry with repairs of electric and water supply systems either. When it came time for repairs, they simply tore up the contracts (they had no legal right, but they do not comply with the laws), turned off the elevators, lights in public areas, stopped cleaning the territory and taking out garbage.
The leadership is inadequate.
When they began to put pressure on them through all possible instances - in order to avoid problems, they allegedly made concessions, "agreeing" to serve with new tariffs (which they never justified), as well as under a management agreement, thereby - they will now simply shift to the tenants all the repairs that are necessary due to their mismanagement the relationship to the house and its maintenance.
A dishonest company.
If it is possible to change to another normal company, change it without waiting for the lights to be turned off, the elevators to stop servicing the house.