Insurance policy issue

I went to Cellucity Century City after purchasing a cellphone at Woolworths. I enquired about cellphone insurance as they offered insurance. I was asked for my documentation (ID, proof of banking, cellphone IMEI number etc) I was advised I will be contacted regarding the policy. A week went by then I started following up by calling their head office number and was advised there is a policy under my name and that an agent will contact me. They sent me my document and as I read through the terms and conditions it states that cellphones not bought at Cellucity or service providers would not be covered. I then enquired to make sure that indeed my cellphone being purchased at Woolworths doesn't qualify for cover. I called their admin plus and was told I would not be covered and I asked to then cancel. I was advised to email *** and request for cancellation. The email does not go through nor do I get assistance from the other departments. I need to cancel this policy as soon as possible as I cannot understand why I was misled to take the cover initially when I clearly did not qualify. I need assistance in this regard.