@Kris74
You can't do it online and also it is unlikely that Sky will let you cancel if you are in a contract with them for anything from a sim to a mobile device to a TV package so if this is the case then you will have to call them:
150 is the free number to use from a phone that has a Sky mobile sim in it or Sky Talk phone otherwise under "Need more help ?" link at the bottom of the page on this link is the number to call Sky on:
https://www.sky.com/help/home
Try saying nothing when spoken to by the bot.
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