NON-RESPONSE FROM VODACOM

Many years ago, I signed up for a 2-year Vodacom contract which has expired since 2015. It might even have been around 2014. When I ran a credit rating on my name, Clear Score showed that there is still a Vodacom contract in my name. There is probably an amount that accumulates somewhere as a result of this which I was unaware of. I've sent Vodacom 2 emails regarding this matter stating my account number since I don't have the telephone number anymore, but they have not responded. I have also set up the email to send me a notification as soon as the mail was read. Both times the email was read but there was no response from Vodacom. I can't even solve this matter via a telephone because they require the cell number to be stated which I don't have.