Alliance One Deceitful debt collection practices and refusal to provide documentation Internet

I was contacted by a Miss Cook from Alliance One for a settlement of an outstanding credit card bill. We agreed on the phone to a 50% settlement, to be paid by installments monthly of 10% of that 50% balance. Despite four calls, Miss Crook would not provide documentation, and my credit card invoices continued to show my payments as payments off the total amount. I finally got a credit support agency to call this crook, and she denied any settlement and said that the whole amount was being paid off. I have subsequently stopped all payments given this breach of verbal contract. This agency generally, and Miss Crook specifically, are totally deceitful and unprofessional. DO NOT agree to any payment to them WITHOUT full written documentation FIRST. They are smooth, accomplished liars and tricksters.