Car parts on backorder is a nightmare

I took my Nissan magnite to a nissan dealership on 2 January 2024 after experiencing problems since it's service last year. They said the timing chain and sprocket were damaged and they need to order the parts. First they said ETA is on the 16th Feb but the parts weren't delivered. Then ETA was 2 April but still nothing delivered. And now to top it off they aren't even responding to my emails. How is it fair that for almost 4 months now I'm paying for a car I don't even drive. If I wanted an almera I would've bought an almera not a top of the range Nissan magnite. Nissan SA I just want my car back