Where is my sim card?

hhaybo guys, I recently subscribed to a month to month LTE contract. I have received the wifi device, but there was no sim card. I tried emailing your customer service, but they are not replying to my question, I honestly don't know what they are replying to. Your contact call center is worse because it doesn't give you the option to speak to someone. I HAVE NO DATA, SOMEBODY GET BACK TO ME!!!!