Extra contract added after upgrade , ***** or error?

Recently upgraded my account as I have done for over 2 decades, sales person Bryson was eager to sell me more and promptly added another contract to my name without consent. At no time did I ask for another contract , nor do I need another contract or cell phone for that matter. Not sure whether sales people get paid incentives or commissions based on targets met but adding another contract onto a customer without consent is ***** in my view . The above was only brought to my attention when a second phone was delivered to my door and I immediately called cell C to let them know that they had delivered a second device via courier. I have been running after Cell C ever since to return THEIR property. Seriously considering moving to another provider. I receive sales call daily from Cell C sales people trying to get me to upgrade but no calls relating to the issue of *****. I received 2 calls today alone, no exaggeration . I would suggest that you be very careful doing an "on call upgrade" and rather walk into a cell C store and deal with someone face to face because that way you can use your instincts to determine whether the deal is legit and whether you feel comfortable to sign actual paperwork. I am a business person and certainly do not have time to run after Cell C auto reply and auto Prompt messages. Can a human being address and resolve this issue or should I too make use of technology and let the social media audience share their opinions on the above?