You must know something very important. There are many spells that use general invocations eg "the force of fire" and etc. But really there is not some like that. The being of Fire are called "Salamanders", this elementary are in an evolution scale equal or less (sorry by my poor english) respect of humans. There are the Directors of this elementary that is with They we must work always. Work with elementary is not recomended because because dont has own intelligence to make their work, just use your direction by visualitati?n. Why I say it?
Ok, i guess that you has been make some spell where you allowed, or left the astral door oppen, some spirit come back to you.
You can fix this problem talking with authority saying "Stop!, Silence, you cant disturb me any more!, it is not your place, go out with peace. Now you are free."
To all this manifestations you always act with autority and take the control with force quickly. do it and this will not disturb you again.