Refund due to payment incorrectly paid to them

I am totally disgusted and frustrated with these *********** accounts department at CPUT. Firstly you struggle to get hold of them via phone and they never ever respond to e-mail. When you do manage to get hold of them they give you some vague story about being busy with registrations etc... My company incorrectly paid CPUT on the 30 January 2015 now I'm struggling to get my money back. I'm in a panic because I need my materials from Compuscan academy as I'm writing exams in June but obviously I wont get that if CPUT is delaying sending a cheque. I cant take them so long to refund. Do you want to tell me that registration takes them so long that they cant help another customer? If this is the service they provide to a non student then I dread to know the service they provide to their students. I'm so glad i decided to not go with CPUT beginning of January and to rather go with Compuscan (they give the best service online and respond to e-mails almost immediately).