Your local lux branch...
will not know you did not purchase the unit new unless they look it up on the computer, That unit is over 5yrs old. Aerus is trying desperately to rebuild the name recognition they had before the sale of the Electrolux name. The rep in Indy, Stan, is very, very service oriented. I would think all of them would be. Your future opinion of their products and what you tell others about their products and service is contingent upon your impression of them. EVERY CUSTOMER INTERACTION IS IMPORTANT. I would go in and say I needed bags, but the machine has a problem. If he knows you intend to buy something, and will keep coming back for bags if the cleaner works properly, he will be much more inclined to help you out at little to no cost.
Do you need a new hose? You probably need a new brush roll. Anything that you can use that will boost the branch's revenues will make him more amenable to helping you.