Account opened *****ulently using my ID

I received a call from Collier & Malan demanding that I pay them an outstanding balance for a purchase made in October 2024. I have never had an account with Payflex nor bought anything using their account. How does Payflex allow someone to use my ID Number to open an account? The email address and phone number used are not mine. I tried to call but the calls are not answered there is a recording that instructs you to send an email to support. When you send an email to support you get a generic response that does not help. Please can someone assist in clearing my name before my credit profile gets tarnished from purchases I did not make.