I have looked into the account and can see you do need a tech to come and visit, I have taken the opportunity to book the next available appointment, this is for Friday (30th) between the hours of 4-7. If this time and date is not suitable you can change this by Logging into your online account
I'm having similar problems to the original poster - I have tried "speaking" to someone via 150 but I just go round in circles eventually being told the call centres are closed. I started a conversation with the "bot" online and it eventually tried to transfer me to someone to "speak to" but this seemed to fail as well.
We are sometimes able to make outgoing calls but the line is very very noisy/crackly. Other times we cant seem to get a dial tone - sometimes the automated voice tells us to replace the handset and try again. We are unable to receive any incoming calls at all. A test via the check status keeps on telling us that the line is engaged. I have checked that the cable is in firmly to the wall socket (ours is not into the router) and even rebooted the handsets/answer machine base station.
I'm sorry to hear you're having some issues with the landline, I've been able to locate your account using your forum details and I've arranged for a technician to come and inspect the line as there are no faults flagging up from our side.
You can view the time and date of your appointment by signing into your online account here