@RadioRentalUnfortuantely repairing a mast can take a bit of time, and with Covid-19 stituation this will have possibly delayed any repairs / replacement, and also in getting access.
I would recommend using Wifi Calling if your handset has this functionality.
I would also recommend download the o2 my network app, and reporting the issue on their this will then notify you of any update.
You can also put your post code into
https://status.o2.co.uk and check for any updates.
I also doubt o2 will give you any money back on your airtime, as this is something they can not have foreseen.
- Xperia 1V - o2 and Spusu
- Pixel 8 Pro - o2 and Vodafone UK