Unconfirmed arrangement

Received a few calls from Norman Bissett, after each call I receive an sms that states I have agreed to pay a certain amount on my account, all calls are voice recorded and not once did I agree to pay the amount been sms'd to me. First an amount of R400, then 2 hours later and another call for R4000???? Why do they record the phone calls if the call centre does what they want and phone you +- 6 times a day every day! I have spoken to about 6 consultants this week alone and it's only Tuesday. Call centre is a nuisance, don't know what they are doing and don't update their system.