How did you provide the necessary 24V power to these?
E: Oh nvm, you made this up
E2: you also did not run any cables under a skirting board or "something" because if this actually happened it was you who attached the wires.... because thermostats only come with bare terminals as the signaling wires and power wires are snaked through the walls and connected to the furnace or controller. If your story is to be believed, you went out and bought a bunch of thermostats, then went out and bought a bunch of random wires to connect to them. (This should also cover your anticipated lie that they were not digital).
E3: the notion that you would have an adjustable temperature setting, while the thermostat ALSO displays the present room temperature, and you just glossing past the idea that nobody's going to notice. Additionally, the idea that some busybody is going to allow them to sit there with nothing said is sheer madness. It's almost like you've never had a job in a real office.
I fucking cannot stand people like you. Stop making up BS because you're lonely.