Shocking Customer Service

I am highly disgusted in the service I received today from Pick n Pay walker drive in port elizabeth. I have taken back 4 Aim 1.7L glass kettles in the last 9 months and today was the 5th time at the store to return a 5th 1, I complained to the manager about it plus said I want to be compensated for my driving up and down to the store as its costing me petrol and their products shouldnt be sold if theyre so defective just for them to keep exchanging the kettle for the same make plus I mentioned to her their policy of double the difference in which she responded in a rude manner that the policy was no longer applicable!!! SINCE WHEN??!!? It's highly unacceptable how they handle customer service it's SHOCKING to say the least! I should've been given a new kettle and my money back as AIM is THEIR product! Well they have lost a good customer and will lose more as I will not be going back there plus am going to spread the word about it. Highly disappointed and disgusted!