how to unsubscribe from these guys

hi im trying desperately to unsubscribe from the panel station , did some surveys with these guys but it always ends up that halfway threw it a msg appears that u dont meet criteria. none the less i have sent and clicked many a times on the unsubcribe link but only get below reply ,then more surveys .and advice or help ?<br> <br> ear Panelist ,<br> <br> Thank you for bringing this to our attention.<br> <br> We have forwarded your request to the concerned team and assure you that your email id would be unsubscribed from the system at the earliest.<br> <br> Appreciate your patience until then.<br> <br> Thank you,<br> The Panel Station.<br> <br> Working hours: Monday to Friday - 10AM to 6PM