Kambrook mixer

Good morning.. I am writing to you at 1am in the morning because I am frustrated !! I bought a kambrook hand mixer from you last year .. I have since returned the mixer to the store 3 times as it would suddenly stop working on the one side .. law and behold the 4th mixture has done the same thing .. I don’t use this mixer a lot and I’m shocked that it keeps breaking down .. I spoke to the manager at clicks mall of Africa who assured me that this will be looked into and till today I have not received any feedback and that was almost 3 months ago .. he even hinted that if there was an issue I would be rewarded for it which I don’t care about .. I just need a mixer that works that’s all !!!