LEWIS STORES CANCEL MY CONTRACT!!!!

On 4th of May 2018 I purchased a LG MS3040S CSL@SAF 30l Microwave from Lewis Stores Upington. During June 2018 the light of the microwave oven fused and on 25th of June 2018 I returned the microwave to the store Manager. I also informed them that I am moving to Kimberley on 28th of June 2018 and that I want the microwave before that date. I were informed that there is not another LG microwave in store but will ask the Kimberley Lewis Store to deliver the machine at my new address on 29th of June 2018. The Microwave was not delivered as promised on 29 June 2018. I phoned on the Friday, 29th and Saturday 30th of June 2018 which were rep**** that the Kimberley Store will deliver the microwave. In the following week again I phoned and still did not receive the microwave. Then I sent a e-mail on 3rd of July 2018 to the email of Upington Lewis group to cancel the contract as I did not receive the microwave. Up until today no response also on my e-mail I sent. My sister called during July 2018 and spoke to store Manager, whom said that there is not yet a microwave available and he will let me know. He could not give a proper answer on the request. I was contacted on 3 occasions that they cannot get me a LG Microwave. On the 2nd call I was informed that they are working on the problem to get me a microwave. On 24th of July 2018, a month after I returned the microwave, I were contacted on phone and informed me that he cannot get hold of the Lewis Stores in Kimberley but as soon as he does he will give the address that a microwave can be delivered or for me to go and collect the microwave. I have cancelled the contract by mail as I am not receiving a microwave but received no response that the contract is indeed cancelled. Upington Lewis group phoned and asked when will I pay my installment, but I cannot pay for a product that I do not have and told her that I cancelled the contract and do not want the machine anymore as the service of Lewis is very poor. I also received a message from Lewis Head Office that my payment is outstanding. The last few days I am receiving sms'e that I did not honor my payment as promised, but I cannot pay for a product I do not have AND CANCELLED the contract as I am very disappointed in Lewis Group. I bought several items from Lewis group, but the service I received from Upington is very poor and I will never do business with the Lewis group again. Really disappointed Customer