I signed-up for a trial YAHOO! Mail PRO membership but quickly decided it was not for me. I cancelled my trial membership within the suggested 14 day cancellation period. Since cancelling the YAHOO ad for PRO continues to POP-UP when I try to open an email. This POP-UP AD is EXTREMELY ANNOYING as I must stop and request a return to YAHOO BASIC before opening the email. Is there a way to DELETE THIS POP-UP AD? I have tried YAHOO HELP with NO LUCK. THEY DON'T SEEM TO CARE!