Just close your doors and delete my number

DMC contacted me months ago. Tried to con me into paying some majorly old accounts. Offered me 0% interest on payment etc etc etc. Set up duplicate debit orders to the extent I had to close my bank account. Kept contacting them as I also noticed the accounts was not on 0% interest. Sent them numerous messages to let them know I am not paying until it has not been sorted out. Now they keep sending sms'es reminding me to pay when still nothing has been fixed. I don't know how these people still make money as they really offer the worst service. They are quick to jump for bank details but no after service and they make false promises that they do not keep. So I wanted it on a social media platform where I have proof of this conversation as I know they will now jump with an email and once again nothing more will happen. They even went as far as to tell me on a message it has been sorted and is now on 0% and when I logged in to check it was not !!!!