Is it a new installation? If so call the Pre-installation and delivery team on 0800 052 1734 or 0345 454 1111 and see if they will send you a longer one - I think they have 1m and 3m ones.
If you need longer it will need a Tech install to make up and fit a longer cable. This should be free - but they may want to charge you
--------------------
John
--------------------
I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired, 2 on WiFi) Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's. On Volt 350Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.