I cancelled my Oh card as I only would qualify for the premium extra plus card, which obligatory came with some nonsense insurance of S/47 every three months. They told me I could cancel it after 2 months and 14 days, but obviously I forgot the exact timeframe they gave me, so ended up paying the nonsense obligatory fee. As they only gave like S/0.20 discounts on shopping in Plaza Vea I decided to cancel the card.
I could not get the standard card, only the premium extra card, the girl who issued it at that time actually got kind of excited about it, as normally her system only issued the standard cards. So having a good credit score in Peru doesn't necessarily mean that you get the cards you actually wanted ..