How do I cancel my contract

[Doreen1]

I have a sim but have never used it so how do I cancel my contract 

[Bambino]

@Doreen1 See this: How to find help & contact O2: A Guide - O2 Community

Cancelling your contract - An updated guide - O2 Community

[pgn]

Note that any data doubling or WiFi Pods on your VirginMedia broadband, as this is posted in Volt, will also be removed as a result of cancelling the O2 side of things as per guide shared by @Bambino above,@Doreen1 - the SIM gives you benefits beyond the few pounds a month it costs. Check before cancelling, is my advice.