Wrong billing dilemma

It's been almost 6 months now being hounded about a bill had nothing to do with me with the account number that has nothing to do with me. How did they get my ID number and phone number and associate it with that account? Beats me really. And each time I enquired about this matter on their Twitter/ X page, they confirm that it's not my account and must just tell them to stop bothering me. Easier said - now I just received an sms talking about summons and judgements and traces. Why aren't Telkom people not communicating with their debt collectors,

Even their call centre is unavailable as well as their email service is non-existant. Talk about the worst customer service ever!!!