********** Avon account opened under my name

Today I received unexpected call from the Lawyers stating that I am owing Avon +-R1600 there for I am being handed over. As far as I know, I do not have an account or had an account before with Avon. I immediately disputed that I have an account with Avon. I was advised to call Avon during working hours. It's very disturbing to be told that I am being handed over with an account that I did not open. I registered their application as I saw it on the internet and I noticed that there is another order which has been recent made and whoever opened the account is waiting for dispatch. How possible is that, that if one is being handed over and still can make an order on the same account. I am very unhappy and finding the process very unprofessional.