rude manager

Good day<br> I bought a contract phone Sony experia c2 at Vodacom shop at Gauteng Ga-rankuwa complex , information was omitted by the agent , she didn't tell me of paying a fee of R10 per month for caller identification, so before a week end after signing the contract, I called Vodacom call centre and they told me if I want to cancel my contract I should go before 7days , I went to Ga-rankuwa were I bought my phone to explain the matter, they said a lady who was helping is not at work and the acting manger called the store manager to ask for assistance on this matter,the store manager was rude ,he said I can't cancel my contract I can open the case for them or do whatever I want , he is off duty he can't help.the acting manger signed and stamped my receipt to show that I came to the store and he tried to help and if I open a case he tried his best. hello Peter team please help to show the store manger to respect customers even if he is off duty,and help me to get that caller identity without paying that R10 per month because its not nice receiving private numbers always,and I want a new phone . This store manger must go to management leadership course.I haven't used the phone since