The Post Office is slow and unreliable, if you ever feel like life is passing you by too quickly, Post Office have the perfect cure, sign up to a year contract, and believe me, time slows down, as you find yourself counting down the days until the end of the contract.
I terminated my contract at the end of the 12 months, agreed an end of service date, they sent me an email confirming the agreed date, only for them to sever my connection 4 days early, leaving me without an Internet connection, and just nonchelantly saying, it's gone now, we can't do anything about it, as I complained.
Avoid this provider.