Security Checks

I have just contacted Discovery to establish how the Discovery Miles points system works to book a flight for my son using discovery miles. Two weeks ago I linked into the voice recognition system which failed to work and once again I had to answer the security questions. Which I did and passed and they assisted me with the process. I know enter the website and try and book a Kalula flight using my points. The system will not allow me to book the flight as it will not accept decimal points and it is impossible to get the right number of points exactly. I phone Discovery again and answer the exact same questions and fail the test. Voice recognition I am now told is not for the card, who knows with this lot. The Manager Romano Feekola and specialist Nicole Saalie will not assist and I am told my card is blocked . The question is how did I fail your security check - no answer - we cant establish that unless some bureaucratic process is followed and this will take some time. Oh and the boss can only get back to me in a days time. Your service is pathetic and can someone get back to me this year if you are not too busy.