Spring vaccum

I went in to the store which sells furniture and vacuums. The belt on my Eureka Vacuum had broken. I had the model and make of my vacuum, but the belt I was sold from the person in this store costs $28.00 and was far too small and I cut my hand during the attempt to replace it even though I followed the manual. The online price to order this belt is $5.00 from Eureka. I was only given a debit receipt from SPRING and hope I will be able to return it to get my money back.