the new car broke down in less than 7 days

My self and my wife were working in the same area then I agreed to use one car which was mine. Then when I changed jobs I went to another area so we agreed that we needed another car. We went to hundai, we bought an I20 which we liked. Five days down the line the car broke down, they came and took the car then the following day I had to use a taxi. I used the taxi for a week (of which I was avoiding when buying a car) then a week later I called in requesting that I need a car they then after a long time gave me a (loan) car. Three weeks later they called me to come collect the car, I took the car home upon opening in an engine the car was fixed with silicone and cable ties. Very disappointed that I had to leave my car to be fixed again today and use a loan car.