Dirty stove no products to clean and stove not working - bad aftersales help from Game Clearwater and KIC

I bought a Whirlpool stove and oven in December 2021 at Game Stores Clearwater Mall. I have had nothing but frustration with the stove. I cannot find a chemical to clean the stove, it is very very dirty. Dirt is just piling up on the stove. I went to the shop at Clearwater and the sales lady referred me to Whirlpool countless times I have been there to complain about the stove. The impression she is giving is that it is not Game Stores problem they are merely selling for Whirlpool/KIC. When I contact Whirlpool/KIC, they recommend products that cannot be found in the market to clean the stove. Ntombi Mnisi from KIC/Whirlpool keeps on recommending different products for cleaning the stove. I don't know where I am supposed to buy them and it seems like she is just googling and sending me what she thinks might work. She is not vouching for any or helping me to check who is selling cleaning chemicals. I have had a silver stove for the past 10 years with no problem at all. So, it is definitely not because I am careless. This stove is my worst nightmare. Then yesterday as I was cooking, the stove knobs made a loud noise, as if internal cables were burning then our stove stopped working after making the main switch to switch off. As it is now, I have a dirty stove that is not working. I have not had the stove for a year as it is, and it has only been a misery. Both the lady at Game shop Clearwater and at KIC have not been helpful. I am not happy with Game Stores and KIC after-sales assistance. The most difficult part is that the R6700 used to buy the stove and oven is money down the drain.