I get 1 codes which is P0174 and another rhat saying cylinder 4 misfire but I have another issue

Ok I went to go get a oilchange they refuse service they said there is no oil in my engine but my l
Dashboaerd saya my oil is good but I went to autozone put some oil in it and geab the dipstick whiped it off put it back in it and it read no oil on my dipstick but I cleaely just put oil in it so started the truck up then turnt it offf and grabbed it again this time it said I overfilled it so whipe it put it back in and pulled the dipstick there was no oil and there is no leak whats wrong with my truck