1st of all when you ring speak to someone who is charge and then tell them what happened and also tell them if they don't resolve this within a certain time limit you will cancel you contract and go somewhere else. Ask for refund of money taken from your account
Follow up with a letter to send to tell them exactly what you told them and tell them specifically you want to be refunded for money taken for services you didn't ask for and you didn't agree to.
Im sure other people will tell you what to do also.
From now on if these people ring tell them to write to you as verbal offers can be changed without your consent as they can tell you the good bits and leave out the bad bits.