Poor service

I app**** for a Black Friday special online on the morning of Monday 22 November. Shortly after the application, I received an SMS saying that my request for a new deal had been received and that a Call center agent will contact me within 24 hours to complete the request. It also stated that if I do not receive a call after 24 hours I should call Vodacom. I didn't receive any call to complete the application. I called back on the morning of Thursday 25 November (72 hours later). I was then told that the deal I had app**** for on Monday had expired and there was nothing they could do. I asked who I could escalate a complaint to. I was given the generic customer care email address which I then emailed. I received a call and email response from customer care saying that my complaint was out of their scope and that I should complain to the online department, which is the same department that gave me the customer care email address. Both departments are just palming the problem off on each other. I just want to be able to apply for the deal which I submitted on Monday, which Vodacom failed to conclude by calling me!