DG Weaver Rhondda

I recently purchased a car from this dealership a used car unfortunately this car was not very powerful on hills so I change it within seven weeks .I then went back to this dealership and changed it for something different which did cost me to do this I have had this new used car for three weeks and within this time the back tyre is all splitting I email the dealership and told them about this and they have told me basically I have to pay for a new one even though I have 3 months warranty.I have always used this dealership for around twenty years and never had a issues at all with dealership. I am really disappointed with Luke at this dealership and wouldn’t recommend this garage to anyone as once they have your hard working money they don’t want to know