False advertising/unable to provide feedback

I had app**** for the vodacom deal that was advertised for a 4G router of 100Gb a week and a half prior to lock down ... The call center called me and I had completed an entire application with them for the deal. I was told delivery would be in 5-7 working days. A week had passed I had called to find the status of delivery and was told that the deal is now obselete as there is no stock. I found strange because the product was still being advertised which I had screenshot a picture of and emailed to the call center agent. I was not called back to be informed that there isn't stock yet the product was still advertised. Until today I have received no feed back or given an option of an alternative deal. I would have rather not wasted time and went to another service provider.