紧急求助!!

刚发现拿到的签证上把我的 given name(双名)中间加了个空格,而我的护照和I-797上的given name 都是没有空格连在一起的,不知道拿这个签证入境会不会有麻烦?
如果要改签证,怎样联系大使馆,那儿的电话好像从来就没人接。。。我还有一个星期就要返美,真是急死了!!请有经验的大侠提供线索,多谢多谢!!

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it does not matter. The same thing happened to me. I did not notice it until I came here. the only disadvantage is that some of your documents later in US will follow that one with a space in your first mane. I still sign everything and report my name as without any space officlially. So far I 've been here for four years, no problem at all.