Jewaco Nigeria Limited - Nigeria

I bought a firman generator from jewaco in front of Oluyemi Kayode stadium Ado Ekiti. It was making ringing sounds, I returned it and I was promised a replacement. I was reinvited two days later only to find out they were giving me the same one claiming they repaired it. Why would you need to repair a Gen that is less than a week old. I told them I couldn't take it. And they started making all sort of threats. I bought the product from them because I thought they were reputable and trustworthy. They just are a scam