Accused of stealing something when I didn't in store.?

I was at a convenient store today that i go to a lot, i was gonna buy those small starbucks shot drinks but then decided not too at the same time i took out my wallet and put my wallet back in my pocket kinda like near a rack, then opened up the fridge and put them back when i decided i didn't want them, i had my cigs and keys in my shorts pocket so they looked like i had something in them, the clerk was watching me the whole time and I guess while taking my wallet in and out he thought i pocketed one of the drinks, I went up to the register to buy cigs and he goes "So you put something in your pocket?" I said "nope, just my keys and wallet and my old pack of cigs" so i paid for my cigs and went out to parking lot and just thought "wow that guy accused me of stealing when i didn't" so I went back in and asked Did you accuse me of stealing something? and he goes yah I know you had that drink in your pocket, so i empty out my pockets and no drink, he then goes well why were you taking stuff in and out of your pocket? I told him it was my wallet and even showed him where i put the drinks back, they even have cameras, and he admitted that he didnt see me do it just assumed cause i kept going in and out of my pockets looking at my wallet to see how much money i had, etc... Then he gets mad and tells me "oh yah you wanna take this out to the parking lot now?" I know the cameras in there are voiced too with sound, if I wanted too could I sue the store for wrongly accusing me?