If no issues show on the number Mike posted, you could try this....
First do a quick check that all of your coax cable connections are in nice and "finger" tight - at the Hub and wall box and also at any splitters/attenuators/etc. Ensure there are no “unterminated cable loose ends. Disconnect all the connections and reconnect to be sure. Also check that the internal wiring is ok with no kinking or chaffing, check that all looks good with the outside cabling and wall box.
Then do a Hub “pinhole reset” - with the Hub "switched on" throughout, press pin in firmly and hold it there for 60 seconds – release the pin then leave it 10’ to stabilise. But, make sure the 2 passwords on the Hub sticker are still there and legible first !
If it doesnt resolve it try calling in to see if there is a fault they can see when the look at your connection they are still picking up calls.
Are the low speeds evident on both ethernet wired connections to a computer/laptop - or just on wifi ones?
-------------------- John --------------------
My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.