Mweb Are Misleading And *****

I app**** for an Adsl line with Mweb, the guy I spoke to said he's going to transfer me to their technical department to help me set up the router and I will receive a username and password but the call went straight to the survey option and I never received login details. On the same day I canceled because my husband did not like the package and I was told that I will receive a confirmation email when it's canceled. I called Mweb again today 23 June 2020 because I received an invoice of almost R600 for a service I never used. Mweb told me the reason I cancel is because I got retrenched!!!! Where the hell did you get that information from??? I never told anyone that and no one asked me the reason for my cancelation, your calls are recorded so please don't make up stories. Now Mweb is telling me the cancelation is only taking place in July and I'm liable to pay the amount on the invoice. I AM NOT PAYING FOR SOMETHING I DIDN'T Use, and when I canceled no one told me about the month notice so please sort this this out and don't dare debit my account.