A MESS UP ON MY ACCOUNT SINCE MY UPGRADE

I'm totally disgusted in the TERRIBLE service and the HORRIFIC issues that Cell c has made me endure. From the day I upgraded my contract everything has just been a total mess. I will never ever advise any1 to take up a contract with Cell C. On upgrading, I ask to be put on a 2gig with 50 min airtime. Cell C messes up and puts me on a 3gig with 75 min. Also I upgraded from a Blackberry Z10 to a LG G3... My BB service plan was also not cancelled so I was billed for it as well. I had to call in and ask why my account was so high. On calling and complaining The lady who done my upgrade then said the will bill me for a 2gig but load me with the benefits of a 3gig as they messed up. So it's a new month JUNE and I have not received any data or min. HOW PATHETIC is this?????? It's like I'm a pre-paid subscriber. Never ever have I missed 1 payment to Cell c and this mess is just dragging on and on. Nothing seems to be resolved. Eugene who initially offered me the contract knew exactly what I wanted as I explained it to him in detail and we agreed that financially the 2gig will be what I would be able to pay monthly. February - R687.00 March R642.46 + R156.83 April - R553.67 May R515.51