I can see how frustrating that is. Same here,when my fuel reading is close to empty, i get about 27 gallons of fuel then slowly add a little until it is full.
Here is another thing about filling up, over the last summer we towed our Travel Trailer to California from Nevada and after getting the campsite set up & the Travel Trailer dropped, the next day we went into town and i had 1/4 tank of gas so pulled into a gas station, ( Shell ) when the tank was full, , I started to remove the gas nozzel, & IT WOULD NOT COME OUT !!!!! I TRIED FOR 15 MINUTES. TO GET IT TO RELEASE FROM THE FILLER NECK. I went inside to the cashier /clerk, told him that i CANNOT get your fuel nozzel to release from my fuel filler neck, he said " i will follow you out to the gas island. On the way to the gas pump, the cashier/ clerk asked me if my truck was A RAM, I said yes it is why ? He said for some reason NEW RAM TRUCKS have this same problem, but all other trucks ( FORD, GMC ETC. ) DO NOT HAVE THIS PROBLEM, just the NEW RAM TRUCKS. I let this guy try to get it out just in case something broke, or damaged, that way, it becomes HIS & THE STATION OWNERS PROBLEM. If it was going to damage something, i wanted to make sure all fell onto them. Its their gas pump nozzel causing this & i did NOT want to be the one to break it. The entire incedent was recorded on the security cameras that showed the cashier/ clerk doing all of attempts at safely removing that nozzel.
So be VERY AWARE of this problem in California. The cashier/ clerk spent a full 45 minutes trying to remove the nozzel & i stood right there just in case he started to get frustrated and broke something, that way, they become 100 % responsible.