Money making scheme

I got a call from one of the iq academy consultants and they told me about the different courses that they offer,I was interested in a part time project management course and I registered.They send me an sms confirming my details after seven days they delivered my material,after a week I got an sms that shows the due date of the first assignment.I then submitted the assignment before the due date and then after sometime I never received my results ,I then called them asking them about my results.They told me to resubmit I did that but still did not receive my results but they were still deducting money every month,after paying for almost a year I decided for a month to reverse the money.I then got their attention because they started calling me and asking about the money.I decided to cancel my registration with them,they told me to pay a cancellation fee.I refused to pay because I can't keep on paying for things I do not understand because when I registered with them I was not told about anything nor did I sign any contract.They are now calling me everyday and trying to convince me to not cancel my registration.I'm disgusted by iq academy ,you take advantage of people