Disgruntled client that MTN does not care about

I upgraded on 18 November 2024 and was assured that my new phone would be delivered the next week. In the meantime I bought a new phone cover at a cost of R489. I then received an email to explain that the colour of my choice was no longer available and I chose another colour. After that I was not updated as to when the phone would be delivered despite sending emails. Frustrated I then escalated my complaint to the Complaints Dept and then the CEO. I received an email from the complaints manager that I would receive feedback the same day. Nothing! I sent another email and still nothing. Not even the CEO office responded. Sent another email and still nothing. They are ignoring me. I am really dissapointed at how MTN is treating me after being a paying customer for over 27 years. MTN does not care about you as they probably have enough clients. Just give me feedback and come up with a solution!!!!