EXTREMELY POOR SERVICE

SERVICE IS SHOCKING! I SIGNED UP FOR A 4G SERVICE AND DOWNLOAD SPEED IS LESS THAT 0.6! I HAVE SENT NUMEROUS EMAILS SINCE APRIL AND AM YET TO HAVE THIS ISSUE RESOLVED AND PROPER HELP GIVEN. I HAVE REPEATEDLY REQUESTED THAT A CALL CENTER AGENT CALL ME TO HELP ME RESOLVE THE PROBLEM AND HAVE HAD NOT PHONE CONTACT FROM THEM AT ALL. BUT TODAY I RECEIVE A MAIL SAYING MY BILL IS ON ITS WAY FOR A SERVICE WHICH I HAVE NEVER USED!!!!! NOT ACCEPTABLE