Complaints Management / Escalations doesn't even respond

I've had the longest, most excrutiating chase to get a small matter resolved for the last 6 days. Called 4x, Branch 2x, Linkedin, Escalations email.

What does a customer do when the escalations department doesn't respond to a customer?

One can only pray that the4y never have a n issue with MTN so they don't need to be shoved around, with different stories, and no resolution.