Missing Coax Cable/Cord for Router

Hi, I have been using wifi in my current apartment (they have coax cable already), so the technician didn't give me a coax cable. But now I am moving to the new place, the new place does not have a cable (only the socket). Therefore can I request a coax cable or cord that connecta the router to the socket? It should not be any cost or fees because it should have been included in the kit right? Let me know! Thanks so much for helping me.