Vodacom nightmare

Extremely bad service from lakeside mall, advanced repair center and especially from ceo emailing services, I bought a xiaomi redirect 10A which was extremely slow, took it back they exchanged it for the same phone, exactly the same problem, again they exchanged it for the same make, had again the same problem took it back which lakeside mall kept 09/01/2023 it takes them 7 days to now send it to the advanced repair center. The 1st time round they kept the phone for more then 21 working days. I have been kept the ceo office in update as to what's happening and now they don't even bother to reply to any of the emails. Basically you pay for a phone which is more in for repairs then what you can use it, and it's exactly the same apps I downloaded on my previous phones and had no proble. Why does vodacom sell phones which they don't have spares on. When asked to exchange the unit for another brand and allow me to pay in the difference,they say it's not allowed as the manufacturer will not do so. I have been a loyal customer for as far back as I can remember, I got 5 contracts with them and I will not renew any of them as they come to an end. Really disappointed and disgusted by the service overall. If I could put a lower star rating I would