Do you have a fault somewhere in your building? The most important phonenumbers are noted down below:
| Problem | Company + phonenumber |
| Unclogging | RRS, 020 3144 444 |
| Broken glass | Midglas, 0900 2040 444 |
| Internet | ITT Desk, 0850 1401 41 |
| Elevator | Kone B.V., 0900 2255 566 |
| No warm water | Contact your caretaker or De Key |