YoBit has a warning not to deposit contract, so you can say it's my fault.
They should refund, however it takes some time. I had a similar situation when using Changenow when I did not pay attention to the warning, and they returned the funds to me a few hours. I believe that Yobit must return your funds, so you should contact their support. If they do not do it, it will be a signal that in this way they are trying to appropriate your funds.
You are using an new exchange so their customer support will be high and they will assist you in all the forms to bring trust on you but Yobit is not really new and it already lost their reputation I think so they won't care about any accusations against them.But nothing here to accuse when their terms is clear here.
Perhaps you are right, but I dont think they did it just to gain trust. I have seen a lot of good reviews about their support, and I think these are really professionals. I hope that next time, if I have a problem, they will solve it as quickly. As for YoBit, I believe that they must return funds in any case, although the OP fault is obvious. This is not so difficult to do, and OP could offer them rewards for the extra work.