7 dayvreturn

My husband purchased a Samsung tablet over a 24 month contract yesterday. Today we decided we did not want the contract anymore so I called the cell c branch and spoke to sharnika and she advised that there is no 7 day return policy. This is utter nonsense as I have over 6 other contracts and all stipulate that the items can be returned within 7 working days. They lady mentioned that once a contract has been taken out. It cannot be cancelled. This is not something I have heard of as per the CPA. It has only been one day. This needs to be fixed