Shocking service from Tevo

I bought a 8 in 1 Gourmet Chef from Makro Ottery on friday the 26th of August.When i opened the box i found the 1 grid had a fault.I took it back to Makro on Saturday afternoon.They replaced the whole unit in a sealed box.I took it home,unpacked it,switched it on,no power to the unit.I phoned Makro,spoke to the one Tevo assistant,he said he will get the other Tevo assistant to phone me in 30 minutes as its not his area.I am still waiting.I mailed Tevo on Saturday.To date,no response Absolutely pathetic