Exhausting (attempted) booking experience

<p>Tried to book a return flight for two to CPT from HLA. First time I punch in all the info required, including card details, only to be informed on hitting "complete booking" button that one of the flights I'd selected was fully booked (it didn't tell me which one, for heaven's sake). Go through the entire tedious procedure again, guessing it was the outbound flight - same result. OK, now I know it must be the return flight. Try again, but return flight this time, only to be informed at the death that there's only one seat left, and I should select a different flight altogether. The website throws up a screen showing half a dozen flights - but all with only one seat available. </p> <p>I don't give up easily, but that was enough even for me. We're flying Mango.</p>