6000w inverter

Bought an inverter paid R1***w on 24th July 2023 stated delivery 1-3 days that is why I ordered only to be told takes 15 days for delivery. After receiving the parcel in 9 days the inverter cut off making a terrible noise after 1 hour of use. I've been going back and forth via email with Laura and after 7 days after sending a video showing the noise she tells me it was tested before being sent so how could it last for 1 hour after delivery. Then she told me to get someone to fix it and send receipt to them I will be refunded for that. Then she tells me to send the inverter back to China I asked who pays for custom duties she told me to use postnet or post office. I gave now lost this money as 7 days have passed cannot return it due to back and forth with Laura. They a big ****mers I would advise people not to buy I learnt the hard way