I'd like to take this opportunity to welcome you to the forums and say that I'm really sorry to hear that your phone line is not working at the moment, this must've put a dampener to your return home from holiday.
I've run some testing on the line from my end, and can not see any issues with the local network, so will now need to ask if you've been able to eliminate the phone from being at fault, either by trying another phone on the line, or by trying your phone on a known working line. The reason for me asking this is that the next step would be to book a technician to call out and investigate further for you.
I've sent you a private message in order to get things moving should you be able to eliminate the phone from being at fault. Please look to the top left of this page where you'll see a red envelope icon, click on this and you'll see my message.