Lewis

I bought items from Lewis stores Eldorado park ext 5 the items I bought was sunbeam combo which consists of micro oven.Kettle Griller and a steam iron of which I am still paying off.But the griller and cattle packed up so I returned it to the store and that was one year and about seven months ago and it is still in the store and still not fixed and am still paying for the stuff .Further more with the items I bought was a microwave oven which is a kelvinator that was given back to them the microwave was not even fixed and was given back to me now am still sitting with a broken microwave. What can I do to conclude the problem as I am still paying for the things.