Nissan magnite

I bought a brand new Nissan magnite, in a space of a year it had a malfunction and could not start twice (which they claim it's an earth cable problem) They towed my car to the nearest service station and I've never heard from them. When making follow up and requesting a courtesy car since their malfunctioning car is still under warranty, the dealer refer me to customer care while customer care (Nombuzo) refers me to the dealer.