Millex online and Excslusev brands online

I bord a Millex air fryer 23L for R4099.00 on Millex site and when you buy it go's to exclusev brand from millex. I waited 2 weeks for it after I phone them and then it was strugel from Millex and exclisev brand to get asistans. When my airfryer arived it was the wrong one and á big price divrens it was R2500.00 now they say the one I orderd is dicontinued and they give me the 25L with rotusery. I am hapy a boud the big one but on they site they sell it for R2500. And I pay R4099.00 now they do not want to pay me the exstra money back.