The debt-collection agency, Commonwealth Financial Systems Inc., received my XXXX. XXXX certified - return receipt letter on XXXX XXXX, 2015, which was my dispute of their alleged debt and my direction to discontinue contact with me. I retain the postal return-receipt card, identifying Commonwealth 's receiving my certified mail on that date. Still, Commonwealth continues to call me and their most-recent call originated from their phone number XXXX at XXXX on XXXX XXXX, 2015.