Vodacom Poor service

Good day I have an existing vodacom contract. In March 2018, I requested vodacom to change my banking details for my debit order. This had never been done. My account had gone unpaid for sveral months due to this fact. I had also tried loading them as a beneficiary on my banking app and this was not being allowed. I had made numerous calls to call centre requesting banking details. All i got was sms's with bank nominated beneficiaries which was not working on my app. At the end of last month a very helful consultant assisted me and i managed to load Vodacom as a beneficiary. She told me an amount of R600 + was outstanding and i had made arrangements to pay half last month and the balance at this month end, which i had done. Now i get a message from Hammond Pole attorneys stating that my account is handed over to them and that my account with vodacom is closed. This is very poor communication s****s on vodacoms behalf. Apart from that i am now being charged R1185.61 for this account. This is a *******. I had never before had a problem with vodacom, this is very dissapointing and especially since i am due for an upgrade and this happens.