Just call them back and say you want to cancel. They have no “right” to come into your home, even if you called them first.
From your message, it seems as though you have visited with them before. I strongly suggest you stop discussions with them, because your faith is not strong enough right now to try to convert them and you will be further tempted.
They are nice people, live moral lives and mean well, but they are misguided. Don’t let them misguide you.
There were no golden plates written in “Egyptian”.
Native Americans are not genetically Jewish.
If plural marriage was so important for salvation, why did they give it up to have Utah be recognized as a state?
Jesus came to save all people, but they used to teach that black people bore the mark of Cain and weren’t elegible for their priesthood of believers.
They deny the Trinity and teach that the Father, Son and Holy Spirit are three distinct gods.
They teach that all believers become gods of their own worlds in the afterlife.
Part of my family was Mormon from the early days. By grace, my branch became Catholic again. Stay true to the Church.