Vodacom is *********** bully and ****mers

I feel so disguisted with Vodacom. I app**** for a phone contract and they sent m email to send documents which I did. Sales person sends me an email that there is no application on my id and when i called them they can see application but state that i have a vodacom account in arrears. When i ask for proof of such account they do not provide. I dont know why i trusted them again when in 2020 they billed me incorrectly for wifi which they disconnected and I had to complain on their social media to get the attention and they acknowledged their error and confirmed matter is resolved. Now I am being told I have an account in arrears for what when I do not use their services