Walk around fiber consultant deceits

Its unfortunate that I have to take it here, but I am on my second support ticket after a walk around consultant visited my street promising the exact service levels for cheaper during the December holidays.

I signed up for this "upgrade", which was actually a downgrade (my current line is 100/50 whereas they signed me up for a 100/10 to be able to show a saving, which I saw on my bill only at the end of the month). This is in fact not the same product for cheaper as they promised Additionally, they did not do an upgrade, but signed me up for a second service. I only have one fiber link running to my property, why would one even consider doing that?

Got billed double on Jan 1st. Phoned Vodacom on the 5th of January and was promised a solution (cancelation and refund) within 10 business days) Come today Feb 1st, I am yet again billed.

Does one have to bug support to actually properly action your ticket? I phoned today and got issued a second support ticket but I have lost faith in the ability of the standard helpdesk to sort this out, hence why I am taking it here for someone to action and the public to know to never sign up through walk-around consultants as they will tell you anything to sign