Amended my return before receiving any money. Now i owe?? Im confused.

I e filed my tax return on here back in Feb. It was accepted but never approved. I didnt owe anything and it was calculated that I was suppose to recieve a return. But it never came So I checked the numbers and saw a mistake and amended my return. Now it says I owe. The original amount was larger than what the amended amount is. I dont know if its Turbotax or if I did something wrong because its like I'm expected to pay the difference on a payment I've never recieved.