Disgusting Level of service from Cell C

I am so disappointed with Cell c

After being a loyal customer for so many years im being treated very bad for trying to upgrade.

3 June, I get a call from a consultant offering an upgrade, I agree and explain that I want to be on 50Gig contract, call cuts. This person decides to move me from a 40 gig contract that I am currently on and puts me on 500MB top up contract without any explanations.

4 June, I wake up to such horror that my package has been changed. I had over 30 gig the previous day and now im left with 0 data. I immediately call Cell c to sort this out. eventually after being passed around to so many departments I get a call from a very helpful lady who assists me to "upgrade". I explained that I need the ugrade to kick in immediately as I am in a middle of exams and I can not afford to not have data, she assures me that my data will be loaded. I get a contract the same day confirming the upgrade.

5 June, The issue is still not resolved, I still have 0 data. I tried to call cell c so many times, after holding for a long time I get hold of a consultant who then drops the call.

Can someone please call me urgently to sort this out or put me back on the my old contract.