Can someone please help me???

[Physician&Snakes]

I have tried feeding him f/t pinkies, thats what the store told me they were feeding him and he isn't interested in it at all. He balls up and tucks his head when I present it to him. I have also tried leaving it in the cage with him and he still doesn't touch it.

Have you left it overnight? Pinkies are way too small, try a live rat pup or mouse hopper at least if overnight has not worked. If that's a 40-gallon cage then you may also need to add some hides to help him out security wise.