Buying before utilising money services - Consumer Complaint for PEP STORES

I'm a 46 year old male. I went to PEP cell in Enoch Sontonga Mall Katlehong to pay my DSTV account, I was told by the cashier there that I have to purchase something before I pay DSTV. The next month I paid at Chris Hani Mall branch but was never told to purchase something. So I would like to know if it is pep cell's policy or they are just doing their will at Sontonga Mall PEP cell branch.