American Collections Enterprise, Inc. Debt Collection Complaint

American Collections Enterprise, Inc. Debt collection department,

I do not know Improper contact or sharing of info Contacted employer after asked not to Maryland

I never give out my work number as I am not allowed calls at work. I received a call today - -, 2015 from a - at - - stating he needed the last - of my social security number or he needed to verify my address I asked who he was collecting on behalf of as the debts I do have I am working directly with the people I owe and have payment arrangements. He stated he is not allowed to tell me until I give him the last - of my social security or my street address. I said you can send me something in writing but he states they did. I have nothing from ACEI in any form of writing, I asked him when he mailed it he said by asking that question I verified my address..???? What? He also said he was calling my home number and I asked him to verify what number he had and he told me he can not give out my home number either. So how am I supposed to verify what they are calling me about without giving information to someone I know nothing about?