The most recent promotion specified that I buy three subs I get the fourth one for free

The most recent promotion specified that I buy three subs I get the fourth one for free. The only problem is that the fourth one is a garbage club sandwich which nobody ever gets. Why am I forced to eat this garbage of a sub club sandwich for the free one? If I bought three foot-long chicken sandwich sandwiches why am I forced to eat the garbage deli meat sandwich? This is not right to treat your customers like this. what a waste. I thought there was actually a real promo here, but this is garbage. I’m gonna get my free sandwich and likely throw it in the trashcan. Subway has gone downhill significantly lately and I thought that this was a good start but no this is still trash and I am probably gonna delete the Subway® app after this.