I became aware of this yesterday when I received an invoice dated 12/11/24, showing that there was a contract taken out for close to R1500pm I have been abroad for the past four months and did not authorise this contract

I became aware of this yesterday when I received an invoice dated 12/11/24, showing that there was a contract taken out for close to R1500pm I have been abroad for the past four months and did not authorise this contract. I do not work in South Africa currently so I am very concerned about this matter. Despite explaining this to your customer care team, they insisted I return to the country to provide an affidavit. Who is going to pay for my flights to resolve this matter?? As I was not the one who took the contract. It was MTN who approved this contract. I did not apply for anything, not did I approve for anything to be taken on my name. Especially since I have not been in the country. I am concerned about the lack of safeguarding measures that allowed someone to take out a contract in my name without verification.