Homechoice

I bought a microwave and some other few things from homechoice in September last year. In January this year the microwave stopped functioning and was sent of for repairs, this happened on the 25th January 2021. I did not hear anything from homechoice till even now. I also made a follow-up call last week to their customer service where I was told that if you don't hear from us then there is no feedback. I called again this morning and was told a supervisor will contact me. I am expected by law to pay my accounts but where did "due diligence'' disappear or is there an ombudsman who deal with these types of complaints as I am not getting hold of anyone who are able to assist or give me answers with regards to my complaint.