This is definitely confusing, but thankfully, you're not quite correct. Those refunds only apply to unplayed games within a particular series. So for example, if the Jays are in the World Series, you will have paid for 4 (home) games. If the series is swept in the first 4 games, you will be refunded for the two remaining games that did not end up being played.
You will not be charged for World Series tickets if the Jays get bounced in the first round. There are ticket payments due on Sep 28, Oct 12, and Oct 24. If the Jays do not advance past the first round, the Oct 12 and 24 payments will be canceled. If the Jays get eliminated in the ALCS, the Oct 24 payment will be canceled. I have spoken to my account manager to clarify about this.