Foreigners often make some strange mistakes in Chinese when they study the most difficult language--- ---Chinese. We try to analyze typical sentences to correct these errors.

         Rúɡuǒ jiē bú dào nǐ de xìn, wǒ jiù bù lái nǐ nà'ér le.
False: 如果接不到你的信，我就不来你那儿了。
        Rúɡuǒ jiē bú dào nǐ de xìn, wǒ jiù bú qù nǐ nà'ér le.
True: 如果接不到你的信，我就不去你那儿了。

“来”的意思是从别处到说话人所在地。原句却是说话人由所在地向别处走，应当改“来”为“去”。
来 implies the direction from a place to where the speaker is. In the sentnece above, the motion proceeds a way from the speaker. Thus 去 rather than 来 is the right word.