Have no words for a title, feel soooo disappointed

I bought a stove, was installed a week back, after 4 days of using it, plates are not working, showing funny numbers and alphabets, call makro customer cate and they are able assist in 2-5 days time, unbelievable, now how must I pprepare meals for my 4 kids, can't afford take aways, imagine waiting that long for a stove to be diagnosed, their turn around time fir such appliances is rediculous.