Wanted special offer, but got basic diver\ why isn't offer in the shop ?

I seen special offer thought it was just limited time not exclusive to me, so I went to shop, while doing so I first baught vip, then I thought I was buying an epic crate and two items with the Pearl diver for limited time, but nope, I feel suckered, it should be more direct or at least put the offer in the store where we can see it, because I baught what I saw and thought was the limited time offer, I do not see me making the same mistake twice, I'm disappointed and will not be investing again, this game is a very good, challenging game, it is hard to aquire items and other things, I have pushed through and struggled enough, why wouldn't I want an epic crate ? I have been playing for well over a month and a half, I have one epic weapon that I can't afford to upgrade, playing daily, opening all crates and finishing all challenges, I'm sorry, but this is very disappointing, and I hope you help others before it's too late.