If you previously worked for VM then surely there are contact details on you old contract. Your old Department should be able to direct you.
VM are not big on e-mail... so you could try calling in (0345 454 1111 ) and seeing if you can get help there - but if you get an offshore agent - dont hold your breath.
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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.