I think what he meant isn't that he invested into the yobit investbox. Instead, he most likely accidentally clicked on the "create new plan" button on that page which took him to pay and create a new investment plan.
In that case, I don't think you can get a refund. Unless you are able to somehow get ahold of yobit support which is very unlikely.
A better alternative would be lending to an more reputable exchange. Yobit's not a great exchange in my book from past experiences with them (delayed withdrawals and deposits, wallet problems all the time, etc.), but loaning to an exchange can sometimes be more profitable and more secure than using Yobit's investbox. I've seen numerous negative reviews from a thread about the Investbox (
https://bitcointalk.org/index.php?topic=1922048.120), and I wouldn't recommend continuing to invest there. The vagueness of the Investbox's description doesn't exactly help.
Note that there's
always risk when your coins are outside a wallet that you control. I would not suggest putting all your eggs in investing to exchanges.
Only invest what you can afford to lose.Obviously the investbox in yobit is shady as hell, and I would never go near it. But OP's problem probably isn't that he invested in one of those plans. His problem is that he created one of those investment plans which he had to pay for, for others to invest in.
Yea, I sent them ticket and also shoot a PM to some of the admin their but no response yet. I was stupid to made that mistake, and now I feel a shame on myself. That money is the money that I'm gonna pay for my uni for next trimester on July. it's a lot of money for me to be honest.