Poor customer service

Bought few items in 2022 on credit (totalled 42000.00 with no interest) and paid up in 2025.Amongst the items there is an electric stove (kelvinator) which all the time it was stii wrapped until this year 2026/05 when I completed building my kitchen unit structure, I then realized built in stove plates do not match the kelvinator stove base. The stove was never used before and I reported the mismatching stove unit and after 3 weeks waiting ( shifting blame) I was told the case is escalated to the regional manager whom kept mum until I asked for her contacts. She later showed me an email she wrote to her seniors (no further response/progress). I then contacted their customer care and later (after investigating) I am informed they are waiting for an electrician whom they thought before end of this week (Friday) he would have visited my house and see if change of wiring can be done to fix the mismatch but the consultant added he does not know who will be responsible financially to fix this. Still I am waiting and I do not trust them because at first they said the warranty/guarantee is off and later they admitted is a factory fault. All I said to them is "wrong stove/plate had been delivered and I discovered this only now when I wanted to assemble the piece as I just finished building my kitchen unit". The local store manager sent her driver and the driver also confirmed the mismatch of the oven vs the plates. Still waiting