Welcome to TPG Community!
I've searched for your account using your Community details and was able to find a match.
I just ran a remote line test and this shows no physical issue on the line. I'd like to arrange a call from one of our technicians. Please let us know your best contact time and number via PM and I'll have this arranged for you.
For your reference, you may view this link on how to send a PM.
I would like to make a follow up regarding your most convenient time to receive a callback from one of our technician to further assist with your homephone concern. Also, you need to be in the premise during the callback.
We'll wait for your contact details.