VM (& all other BB providers) provide a service that is guaranteed TO the Hub and what comes out from it on an ethernet cabled device. They all expressly exclude guaranteeing wifi connections - as it is so influenced by the external environment. Even BT with its glossy ad's saying wifi is “guaranteed”, also charge £10/month for that and say that if it isn’t sorted they will just give you £100 back.
VM try and help with splitting the SSID's, swapping the Hub (just in case!) and providing pods etc., but the reality is, that if the Hub wifi doesnt work well for you then you are far better sourcing your own wireless equipment.
I did that 20 years ago and have never had a wifi issue anywhere in the house.
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John
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I do not work for VM. 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 +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.