I would cancel before your billing date, to ensure the autorenew is off.
You can do that after having the extra activated, and it will expire at the end of the free period.
Full details are here Guide: Adding and removing O2 Extras
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iPhone 16 Pro Max - o2 and Spusu
Xperia 1V - Spusu
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This is not customer services and we dont have access to your account
I do not work for o2 or any VMo2 /Telefonica/Liberty Global Company
