Poor service

My mom bought washing(LG 14Kg) machine at OK Funiture and when she bought the washer she also added an extra extended guarantee. Unfortunately since she bought the washer it got broken 2 time and everytime its broken she would call OK then they will call an LG Technician to come fix the washer. But for the 3rd time then she decided that she doesn't want the washer anymore since they are fixing it and it doesn't change. She went to OK and told them that she does not want this washer anymore, they told her that there is nothing they can do because LG takes time to send their tehnicians to come fix their products even them they decided to discontinue the LG products because they are problematic. OK opted to give my Mom a 13Kg washer with is very small.

Now my mom does not want the washer because she can see that she won't be able to even wash her blankets with this washer and again it was no longer LG. Mind you my mom is sick she is no longer working because she took a sick pension, her hands are no longer working yes she can hang the washing on line but cannot iron no wash.

I called LG to find out if they can help me. The lady told me that she cannot help me and the agreement was between my Mom and OK. I said to the lady the reason I am calling it is because it is their product and if they don't want to send someone to fix their products in Standerton what are they saying to their clients in Standerton.

I need to know people if I ma wrong by calling them(LG) What should I do I need you advice.