Unsatisfied customer

Bradlows does not even deserve a star from me, I bought a microwave with a fridge and washing machine from them on the day of delivery I noticed so scratches on the microwave and I reported the matter to the lady who was helping who goes by the name of Tazneem from the Claremont bradlows branch. She then assured me to get back to me as she had to report the matter to her superiors but she never did a month later the microwave broke down and stopped working when I reported the matter I was told that I must take it back to where I had bought it and that came as shock to me cz I had taken out insurance with my purchase which was to cover everything including transportation of the goods in case the broke down or something. But nonetheless I took it back the lady that was helping me did not even want to listen to me just gave me a piece of paper saying that I brought the microwave in for fixing and that was that after almost two weeks later no call or anything I decided to go back to chect they told me they are still waiting for a technician from defy to come and that I had to wait maybe 5 more days still in that 5 days they never got back to me had to go back again and they gave me the microwave which they fixed when I asked how am I supposed to pay for something that broke within 1 month of usage and the lady told me that I have ****roaches in my house they are the ones that damaged the microwave and if it broke again they will not fix it but I am paying extra money on the account I have with them for insurance that they said would cover things like this. I tried reporting the matter to their head office but nothing helped what do I do now?