See below - but - are the issues you are having also evident on ethernet cable connected devices or just wifi ones? What Hub model is it, what package are you on, and what speeds are you getting on wifi and on ethernet cables?
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Call it in on 150 (VM Phone) or 0345 454 1111 (any other phone) and see what they say when they test the connection. Calling at 08.00 midweek (09.00 Sun) is the best time to get through quickly. Although some people are still reporting getting through fine at other times with no long waits
If you get cut off after an automated reboot cycle, just call back in a couple of minutes as the system should know that you have just been on and it hasn’t helped and put you in the queue. Or try options 1,1,4,4, “thinking of leaving” - they usually pick those calls up quickly and then transfer you to the appropriate queue (or cut you off !).
You can also text them on 07533 051809 include account name/number and what the issue is – replies usually take longer.
A VM person should pick this up here and respond, but it can take 5-10 days for them to get here.
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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.