Fraud With The Use Of The Name Qwest Corporation

Since some weeks I receive threatening e-mails signed by a person calling himself Mavis Gillespie from Qwest Corporation, demanding a payent of 9271,78 dollars.Qwest Corporation alledgedly threatens to start a legal procedure, and complains that I do not answer the mails. But I dare not open them, thereby exposing my computer to even more mischief.The person pretending to represent Qwest Corp gives telephone numbersCan you explain these strange and fraudulous charge , whereas I have never had anything to do with Qwest, an never in my life ordered something in the US of more than 200 dollars, and everything is payed.Greetings from Holland,Henk Jonker