Have you checked for “known network faults”?
As well as trying the “check service,” Area status webpage" (link at top right of this forum), also try the “free & automated” Service Status number - 0800 561 0061 - which usually tells you of more local issues down to postcode level (that may not be listed on the Area Status web page which usually covers >1000’s of customers) - that may give you more info, but even that wont cover problems affecting just a few customers.
If nothing shows on there, try calling it in (on 150 VM line - or 0345 454 1111 others) follow options 1,1,4,4, for thinking of leaving" - they will pick it up quickly but calling at 08.00 gives the best chance of getting through easily
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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.