WARNING.. Useless products and customer service

WARNING...Brought a brand new Alva gas water heater paid a fortune to get a plumber and a certified gas installer ..does not work ..phone Alva head office in Cape town wait a mess...wanted coc before sending out a tech on a brand new water heater... dismantled and taking it back and by a different brand...Alva equipment and staff are useless..never will use them again..anyone with a brain will stay far away.