Card payment with held without good reason

On Thursday 26 February 2015 a customer came and paid with his card, he swipe for R6000. And then the next day there was NO payment in my account! I had to pay salaries and still on Saturday there was NO payment! When I phoned the card division on Monday the phone operators transferred me to 10 different people, but without any good reason or explanation..when I talk to somebody and asked if I can speak to the manager, the operator told me his busy, he can't help me.. what the hell??!! Up to now there is still NO money paid in my account!! How can these people withhold money that is not theirs??!! What are these people doing there?