False advertising

I upgraded one of my 7 contracts I have with Vodacom on a Black Friday special. I have the ref no for the confirmed order. Still haven’t heard from anybody until today where they told me sorry they didn’t have enough stock. Then dear service provider you should have said sold out, before we could place an order.” No plan can be made. Sorry for any convenience caused. “Ok, so I will tell you what. How about I change all 7 lines to another service provider?? Although I don’t expect anybody to fix anything from Vodacom ( because they pathetic) I just feel better by telling people out there.... watch out.