SMS special no expiry date

<p>Received an SMS about when my SAA Voyager Miles Expire and an offer below which doesn't make mention of an expiry date... tried to book airplane tickets using the special today not knowing that the special expired on Wednesday... why not state the expiry date of the special on the SMS.</p> <p>Phoned the Call Centre and was told it is noted on the website, what help is that?</p>