Bad customer service

I have been struggling to cancel my line. I sent emails to Vodacom customer care in writing which was ignored. I then stopped my debit order at the bank as a result and then get messages to say im in arrears. I emailed for cancelation as we all dont have the luxury of time little did i know emails now get ignored. I tried numerous times with the useless bot and no one could assist. I finally called Vodacom on my day off and they cant assist me because my account is now in arrears which I paid. I have always struggled to get service from Vodacom. I want this line cancelled immediately.