BT Infinity

[ncalcraft]

Hi,

Can anyone help with BT Infinity? I have fiber optic broadband so I have a white Openreach router with a HomeHub 3. I keep loosing my connection. The wifi is fine, the whole hub shuts down and then re-starts knocking the internet off, I've been on to BT many times, the lines, exchange etc have all been checked and show clear perfect signals, I have had 3 hubs now and 2 routers and 3 engineers round and it is still dropping!!! The BT forums are not helping, the trouble shooting site is useless and I don't know what else BT can do! when it is connected I get a whopping 40mbps download, it just aint stable. Any advice is welcome, Thanks. xx