Signed up online, NO details but deducting money

Beginning of February I signed up online for an uncapped 4MB line. Completed the form and then started waiting for my account details.Phoned their call center 12 times but nobody was of any assistance. Decided to move to another ISP. End of Feb I received a notification that they deducted the money from my account. I sent them an email asking them how they can deduct money when I don't have an account and I've never been able to make use of their service offerings. Ten in Beginning of March they deducted another fee from my account. Nobody has come back to me with any assistance, explanation or apology. I phoned again on Friday, the 4th of March but was again unable to talk to anyone able to assist me. All I want is for them to refund me and never contact me again. How is this acceptable? I would appreciate ANY assistance whatsoever to resolve this ASAP.