I got the visa of J 1, but the agent (Chinese and foreign service) said that I can't go this year because of the embassy, so will it have a bad effect if I don't go after the visa?

Just like you, you can't go if you get a visa. It doesn't matter if you have a visa but don't go to America. Let's unite to find a refund for Chinese and foreign clothes! Liar company, you can do anything before paying, and ignore you after paying. We are negotiating with the company for a refund, which must be fully refunded (project fee, service fee, air ticket, visa and other fees)! You can't just let it go quietly!