Mini grocery items

For every R200.00 I spend at Spar, Food *****'s Market and others, if they are giving away stickers, I get the full amount of stickers in proportion to what I spend without limitation, so if I spend R5,000.00, I get 25 stickers. However, Checkers only gives out a maximum of 10 mini (recycled) grocery item regardless of whether I've spent R2,000.00 or R5,600.00. I don't particularly care that this is their policy as I could split my purchases into 1 or 2.5, I would then ultimately get the mini grocery items. Two and two is not making 4 here, surely you reward in full what is spent at your store. It is an extreme let down by Checkers as we spend a lot of money with Checkers on a weekly basis. I am collecting the mini grocery items for someone who cannot afford to buy more than R150.00 at a time at Checkers.