6-Piece Vacuum Cleaner Attachment Kit - 1 1/4 & 1 3/8 Inch Standard Hose Brush Nozzle & Crevice Tool Set for Deep Cleaning Carpets, Upholstery & Hard-to-Reach Areas

This product is as described and a very good deal. With the included adapter it fits my Shark Power Lift-away vacuum and without the adapter it fits my shop vac. I didn't see the adapter, and in my defense the description didn't say it included an adapter, and I requested and received a refund because without the adapter it didn't fit my vacuum. I want to correct that mistake and repay the vendor. Usually you can simply not return the item and you won't receive your money back but this was one of those 'we'll give you your money back but you can keep the item' things. Can anyone tell me how I can correct my mistake and pay the vendor.