MTN is pathetic!

I have ONE account with MTN. However, this account was hacked and 4 people linked themselves to me and racked up a bill of R132 000 odd during April and May. They changed my primary number to another as well as my email address without my approval and knowledge! So I only found about this when my account was debited this amount! I have now called MULTIPLE times since 1 May 2021 to the call centre, spoken to MULTIPLE people about this and NOTHING has happened!! These numbers are still attached to my account (It’s July) and still racking up money which I’m EXPECTED TO PAY FOR!!! My creditworthiness is shot to hell and it’s NOT MY DOING!! My bank is on my case as on paper I need to be in debt review! The call centres are a waste of time as no one seems to know what they are doing and I can’t even get a reference number when it’s sent off to the ***** department (if it even is) and I can’t make direct contact with the ***** department as I can only go through a call centre person!!! HOW do 4 people get away with this when I HAVENT SIGNED ANY DOCUMENT OR GIVEN ANY APPROVAL FOR THIS!!! Now I’m expected to wait an ADDITIONAL 21 days as per my conversation this morning to the call centre as they keep wanting more and more documents!!! I am FURIOUS!!! Clearly the ombudsman is the way to go.