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@TheViking34972 Here's O2's change your mind policy:
If you’ve taken out a sim only contract in store, over the phone or online, you can change your mind within 14 days of receiving your order. If you do want to cancel your agreement, contact us to let us know and we’ll get it sorted. We won’t ask you to return your sim, all you need to do is cut the sim in half once it’s stopped working.
We’ll give you back all the payments you’ve made, apart from any buy-out fee from your previous contract or any express delivery charges. You also have to pay any usage charges you’ve had in that time.
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