When is a guaranteed booking not guaranteed?

<p>I booked two return flights to Cape Town a month ago using my husband's Voyager miles. When I couldn't check in the night before I thought it was odd as the email said 'Your trip is confirmed and the reservation is guaranteed'. Upon ringing them the next day I was told the booking was cancelled due to non payment of the taxes and a voicemail was left. My voicemail message clearly says 'please don't leave a Voicemail', as does my husbands! However, I still do check, and do not recall ever receiving a message, well not a legible one anyway! And I cannot imagine why my credit card transaction wasn't successful. Not only did I have to rebook later, but with more miles!! Can a company of their size and digital capability NOT send an email? An sms or whatsapp? This is just ongoing awful service! I tried booking a return flight to George from Johannesburg, R1500 in taxes for SA Express and 48000 miles! Voyager your service is not worth the miles we collect! </p>