O2

Hi O2 community, i got my 15£ base tariff O2 Sim card and I have 5£ in my allowance, i need to top up and i don't know if I can top up 10£ to have my 15£ bundle or if I have to top up the right amount of 15£ to have my bundle, could someone can help ...

I just top up my sim card and I didn't get the double data yet, any advice?