Our apologies for the confusion. :( That renewal notice may be due to the automatic renewal which charges you with the original price, included a 10% discount. Our apologies if those promotions are not available via automatic renewal.
To take advantage of our promotions (ranging from 30-60% discounts), our advise is to do a manual renewal that may be either online or over the phone.
To do an online renewal, you may access your Trend Micro Account by clicking here. And to contact us via phones, please do refer on this link. :)