Failure to cancel contract by cell c

On the 24th of November 2015,i received a call from cellc direct , Monique (sales consultant ),who sold me a contract which was for the LG G4, I received the cellphone on the 26/11/2015 via courier service and to my dismay it was not the phone that she had told or described to me. I immediately called back, after being transferred from one department to another I finally got to speak to Tswalo in the follow up department who advised me to take the phone in to the nearest cellc shop and have the contract cancelled. On the 28/11/2015, I went to the cellc branch at the workshop and the manageress ( Priya ) kindly assisted me in taking back the phone. She gave me a waybill no.***2 and advised me to call cellc direct before 7 days to ensure that the contract is cancelled. On the 30/11/2015, I called cellc direct upgrade department spoke to Moipone, who told me that my contract is cancelled and that the phone has been returned to cellc direct, reference no.*** for that call. on the 13/12/2015 I went into cellc at carnival mall to upgrade my contract only for the consultant to tell me that the LG G4 contract has not been cancelled. Disgusted with the service fromcellc.