Bad experience with intellicel

I Took a contract with them in may and the phone was delivered already setup with a certain gmail account. Phone had an administrator App that blocks everything I want to install on the phone.when I reset the phone to start it up as my own.then I couldn't go through it kept saying I must use one of the user''s accounts. Then I told them the story phone was taken away from me.but now they say I am the one with the account pin. I phone today I spoke to carol then gave Busi the phone and then their manager Dazrey who said only now the contract is cancelled I need to open a new one. After she say that she pretending the line is bad and then hang up when I call again they say she is busy on the other line this time every one was so rude to me. I was on hold for more than 20 min waiting for Dezry,line was cut again I phoned back now they say I must speak to accounts department. 1. I have a listing on transunion that I missed payments. 2.some lady from intellicell acounts keep calling me to say I owe them I must pay my account yet they said it's now cancelled. BAD EXPERIENCE, I AM TAKING THIS FURTHER.