Jet really abuses their clients

Very disappointed that Jet is still harassing me with messages and sending encrypted "statements" for my viewing, which I cannot access. I don't know how I can owe them anything because I have never bought goods on account from them. I don't have an account with them. Now I am really fed up with them because I have been trying for over a year to get them to stop messaging me but no one there cares. I buy goods only for cash from Jet.