You won't get any allowances if you don't top up on that bundle and when you do top up it will take the money for your allowances, so you can't use it as a basic PAYG tariff.
If you want O2 and an old fashioned PAYG tariff you need to speak to CS and ask to be moved to "O2 Basic" they may or may not do this though as it is an invitation only tariff.
Otherwise you can stay on O2 network with either Tesco, giffgaff or lycamobile who all offer the old fashioned types of PAYG tariffs.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
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