Get (No) Black!

I have been a relatively happy customer of Cell C for a number of years. My last contract came to an end on 25 May 2019 and I had to decide on an upgrade. As my phone is working perfectly well I decided to go with a SIM only contract, with the benefit of free daily Black Data and a free Black subscription. To date, this service has not been activated. They said I will receive an email on activation of my new contract with a link that allows me to activate this free service. I never received it. There have been at least 4 different people responding to my emails each time I send one. The email show they have not properly read or understood my problem. NO ONE at Cell C or Team Black has been able to resolve my query, or seems to care enough to resolve it. They resent the link but it does not arrive. I have been told 3 different stories as to the problem and it is eventually (evidently) been reported to the back office to activate the account manually. Multiple people have promised to call back and only one has kept their promise - without being able to resolve it though. Now, almost 4 days after this being escalated to the black-hole they call back office, they simply give me a cold-shoulder and tell me they are still investigating - so it's 'wait and see until we decide to get to it'? What a shocking display of absolute poor service. Not getting my hopes up this problem will get resolved as it's seems to be far beyond their ability to solve an email not reaching me?