vocadom ***** dispute

good day kindly note that I have been trying to get hold of Vodacom ***** department for 3 months now. there was someone who made an upgrade in the existing account that I had, I only noticed when Vodacom was trying to debit my account. I did the necessary requirements for submission of *****, however I didn't get joy from the call center to sending mails to their ***** department that was not replying. finally I got the right email address for submission, I got a reference number and even now I am still waiting. last week they called me to say my account is on arrears. my ref number is EC-1J3Z-2CQ8CO , the last email I sent was on the 24th of Jan and still nothing from their side. I call everyday using this number ********** 000 to get to their ***** department they just hang up on me. please assist.