Rude manager refusing to nrefund a wrong bearing that was supp****

I was supp**** the wrong wheel bearing, its the front wheel bearing of an Opel Vivaro and took the hub and new bearing in to a place to be pressed out and the new one in, after they gave the hub with new bearing back to me I saw the bearing is loose, took the hub to Goldwagen Brackenfell and told them I was supp**** the wrong bearing, then they told to they cant refund me because the bearing was pressed allready and the people should have checked before pressing the bearing, THEY DO PRESS WORK AND ARE NOT MECHANICS, they assume the bearing supp**** is the right one, then they said if I can get the bearing out without damage they will refund me, they got it of with only 2 little minor scathes and then the rude manager there said no we cont refund you, the people that pressed it souldve checked the bearing, and my response is they should check and supply the right parts, I will never support GOLDWAGEN again after this experience and will also be contacting the onbudsman