Shouldn't be booking calls for you before 12 if you are on call prev night (I say shouldn't..)
Then they are wrong and you need to look elsewhere for someone who values your wellbeing and safety, duty of care and all that.
Check the safety devices also, possibly one of those, I personally would get a gate co in for liability reasons when his car/wife/kid gets trapped in it.
Unless you have a programming keypad you will not be able to use the panel, there is no service timer on these so there may be a fault elsewhere. Bullet proof panels but disliked by engineers for some reason, as Mr H says you will need to install new.