Fuel system?

I put $10 worth of gas in my car, however the gas gauge didn't move. The next day it moved up just below a 1/4 of the tank line. The following day it had moved back down to the line when the gas light comes on, ( i hadn't driven but maybe 4 miles on the $10 i had added) so i added $25 worth of gas to drive about 10 miles that night and the next morning another 15 miles. still the gas gauge had only moved to about 1/4 tank line again. when i left my house again knowing there was plenty of gas i just ignored it because i thought the gauge was stuck. While driving the gauge went to empty and my car stalled like it was out of gas. Towed truck brought my car home an hour later and it started up. Gauge got to empty it cut off again. i have changed the fuel pump with a sending unit on it, fuel control module, and the accessory power relay under the hood. the fuel pump comes one when i try to start it but mow the gauge will not move above empty: i don't know what else it can be.