Refusing to give my son's bit of money to him.

I would like to make a complaint concerning Capitec Bank in Cresta Mall. My son has an account with them and for 4 months has being receiving 1,600 rand per month from a friend in Bratislava Slovakia. The gentleman's name is Mr. Vladimir Dzuricek. It is a gift given. This month, the bank refused to give him his bit of money saying that he must fill in an Indemnity form with his details and that of the sender's details. The gentleman sending the money has said he is not prepared to give out his personal details as it is an invasion of his privacy. A Capitec gentleman told my son that they will not give him his money now, they are keeping it, and went as far as blocking any future payment gifts from this overseas gentleman. Firstly, this bit of money does not belong to the bank concerned, they have no right to " *****" my son's gift and also they had no authority to just block the bank account from being able to receive any money from overseas. He was told to go to Western Union but excuse me, WHY ARE YOU KEEPING THE SENT MONEY? IT DOES NOT BELONG TO YOU!!!!!!! Please be very careful of Capitec. And yes, we want my son's money!!! Thank you for your time. June Potter.