Coerced aand **** to into taking a contract

Hi<br> <br> ive recently come by some information that says the customer has 7 days in which to return the unit/product if they are not happy.. <br> on 14/04/2015 I went in to waterfall business park and got a Huawei Ascend P7,the very next day I went back to return the phone telling the manager that I did not want the phone but was told it was impossible to change the phone as the box was opened. and all I wanted to do was change the unit. ive called the call centre and the gentlemen told me in the best of ways that they could do nothing about it.. they **** to me just to sell a contract!<br> I would like to get out of this contract and sign up with another service provider as the trust has been lost..<br> <br>