Cancelled contract,being billed

Took out a contract online,purchasing hassle free. I returned the phone within the 7day period and told I would be reimbursed, it's now a month ago and every occasion I follow up I'm told contract cancelled by the online consultant but when I phone in to Chats Connect I'm told contract never cancelled yet I have a paper trail of being told it is. Now a month later and they have the audacity to deduct from my account again while they still didn't pay me back as promised for 1St deduction yet they have their phone. It's utter madness! They quick to get the sale but after service suck! I want my money back asap!