After 5 months waiting find out they've not been able to get permission from landlord to install and cancelled my appointment. No communication with me to facilitate or warning that they need this permission. Clearly a shambolic joke of an amateur organisation.

Edit. Emailed my landlord this morning and within an hour I got the permission they spent 5 months trying and failing to get.

Edit 2. great news my contact with the landlord has allowed this joke of a company to work in my building, they've thanked me by telling me to go apply again and get right to the back of the queue again, scum.