WORST, worst, worst service ever.

I recently was moved from Autopage directly to MTN. As MTN has been my service provider for almost 20 years - I was not nervous about this change - oh boy - I should have been petrified. On 19 April I had a data query and firstly tried to call MTN, as my question is not an easy one. I tried 808, but it is impossible between all those options to find assistance for what I needed. I opted to email them, requesting a call back. They responded asking about the period my question is referring to, when my email clearly states "current". They then advice me to close apps when I am not using them, a complete irrelevant comment to my question. I then responded and even in capital letters asked to be called. Nothing. I followed up on 20 April and again on 28 April. Nothing. I have loaded a comment on Facebook and they promised to get back to me. Nothing. I emailed their complaint department - and guess what?!?! STILL nothing. I did get a email stating the can't call me back as they are a email service centre only. Really?!?!?! I am at lost for words. Please MTN - phone me and make this right?