Its always a tricky one when you arent VM customers. The truth is that if VM dont sort it to your satisfaction in a reasonable time then you can just remove all the cabling and boxes and dump iyt in the skip - there is no actual voltage in them. But to prevent causing issues to other customers with bad connections exposed - give them a reasonable time to sort it before you get stuck in.
I will ask VM to come and contact you on here to discuss what can be done. But dont let it disappear into a black hole that involves an Area Field Manager.
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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, 1 WiFi, 1 on PA) Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's. On 250Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.