Poor customer service and bad attitude

On the 07/03/16 I went to game stores because i saw the 2 tablets for R99 special. When i got there i went to the cellular department and spoke to thi rude guy wearing a purple Tshirt and a gold teeth who told me he cannot help me with the one month statement I had and that I need to bring 3months bank statement, pay slip and proof of address and the originals. I told him I will not have the originals because my payslip is uploaded on the intranet and my statements are emailed to me and he said okay whatever. I then said I will come back the following day he said'bear in mind the special ends today'. I then told him I thought it was until the 08/03/16 and he had the nerve to tell me he does not have an idea where i got that because their pamphlet says the 07th. Okay, I then said I will come back later with all the documents. Later I had to ask my boss to go back and she agreed and when i got there he gave me such a bad attitude asking what is he supposed to do with a statement with 2 salaries, he needs three. I then said but you said a 3 months banks statement and since today its the 07/03/16, that is what is goes back to. He just put it down there and said'then I can't help you.