ZERO RESPONSE FROM CANCELLATIONS OR ANY OTHER E-MAIL OR TELEPHONE CALLS

This is dismal, non-existent service. The company is fabulous when they want to sign you up but, when you want to cancel with them it seems to be impossible to get any response from them. I sold my vehicle and have sent a e-mail to three different e-mail addresses to get a month to month contract cancelled. NO RESPONSE. This morning I called, got put through to cancellations department and sat on hold with NO RESPONSE. CAN SOMEONE PLEASE DEAL WITH MY E-MAILS.