Poor customer service again...

Cell C you have done it with your pathetic customer service. Your service is below poor. Please stop I have had enough. I was called by one of your sales agents the entire week last week offering me an upgrade on my data package. I finally agreed to the update last week Friday the 12th of June, then suddenly my data disappeared. I had no day or night data. I called your 135 customer service number to log a complaint and I was told by your agent that I was downgraded from a 40GB package to 500MB. She said she will log a case and will get back to me within 48 hours. Case ***. Until today when I call to find out what is happening with my case I am told that they have attended the case. In addition to this, I logged a ticket with the insurance department two weeks ago asking them to update the IMEI number of my replacement phone on their system until today nothing has been done, but I am paying for it every month. Ticket ID:213868 Subticket: 610251. I want my data back Cell C I use that data for work purposes, and I want my insurance updated. This service is terrible and pathetic. I feel so unvalued, and disrespected, and I am not getting my money's worth from you at all.