帮忙用英文翻译个句子.麻烦.

i try to call you,but i can't get through .

I try to phone you but can not get through.

I try to call you up,but i can not get through.

I tried calling you but I just couldn't get through.

I tried to call you but it couldn't get through

i attempted to call u but i couldnt get through!!
后者的主语用i 就可以了 不要用 it !
是我不能打通 不是电话不能打通！