hasrate.co.za does not a recomended

Brand DG Home unit purchased. Instructions were furnished, and the incorrect firmware was installed. Seller maintains this caused the fault. Then how and why does one chipset still work if the firmware caused an issue, all chipsets would be offline. No additional support given, lots of promises but nothing actual, just ********* behaviour and no acceptance of responsibility. Be wared buy mining equipment elsewhere from a reputable business with more than two staff.