Bad service

I called vw mooi street to find out if they have a right hand side drive shaft,i spoke to this 1 white guy who initially said he was busy as he was dealing with other customers and then he asked for my car's vin number,as i was giving it to him he just said "i cant hear you" and hung up tje phone on me... I called again this time i spoke to a michael who gladly assisted me,im just disgusted by the service of the first guy i spoke to at the parts department,how do you treat your own vw customers like that when infact we buy cars straight from the dealership mxm...