CELL C....what a waste of time

So I have been a client for a while with cell C...time for upgrade and I decide to go with the usual "call" you recieve when they remind you the upgrade is due...the first thing I ask is...ARE YOU CONTACTING ME FROM CELL C DIRECTLY...answer yes (now I know that was lie 1)..was a call centre contracted to cell c, namely Cell direct . The hand units offered for both contracts were a samsung J9, only to find out later that Cell C actually dont stock the phone and never will (lie 2)...the person who is handling the upgrades, without my knowledge or consent, allocate two different units that I know nothing about or have agreed too (is this lie 3 or just plain thievery)...on delivery I sign and open package to verify contents...when I voice my concern I'm told I signed and opened the box. How do you verify what you signing for without opening the box? Any way, after 3months of endless promises and lies (is that number 4, I think), like, we will fetch the unit and cancel the upgrades in 48hours I'm still in possession of the 1 hand unit.. now they have activated the contract and started billing me...well I'm putting stop orders on all my contracts until you, Cell c, attend to my issue and resolve it as promised...any lawyers out there willing to help?