Cellc, changed their talk but kept their walk

I stopped using cellc's mobile services about 5 years ago due to bad service. Last month I received a letter from them in the post advertising their new fiber so against my better knowledge I decided to join. The installation had its ups and downs but nothing unreasonable thanks to my sales person Yvonne. With my fiber connection I received a free subscription to cell c black an this is where the problem is. Yvonne brought me my cellc black but I noticed I need a password. I asked her for my password and she told me she will take it with her and let them set it up for me. Two days excluding the day she took it past without me hearing anything from her. I then contacted her asking when I will be getting my black, she told me it has been sorted and she will be bringing it to me. The next day I received it and there was no change or any progress I still had the same problem I had when she came to pic it up. I contacted Yvonne and she said "haven't you received the mail from cellc black" which I haven't, that was last week Friday and the only feedback I get now is I have to wait for their mail as I have been for the last 2 weeks, this mail might never come. Clearly cellc still don't understand customer service