The usual cause of not being able to get fuel in the tank is the vent from the tank to the filler neck is blocked. Since that problem happened after you had hoses replaced the shop probably left a low spot or kink in the vent hose. If the hose has a low spot it can get fuel in it and block the fumes from being vented when trying to add fuel. Follow the vent hose from the tank to the filler neck to find the problem.
Chuck & Teri, 1999 35 ft. Dolphin 5350, F53 Chassis with tag axle, Chassis build date 1/99 in Mexico, Banks System, Trans Command, Air Lift Air Bags on rear, Koni Shocks, Blue OX TruCenter, TigerTrak track bars front and rear, Roadmaster 1-3/4" rear auxiliary sway bar, 2013 VW Passat TDI SEL Premium, 1994 36 ft. Avion 5th Wheel. FMCA #F430129