Jet Campus Square

I bought a phone at the store however the phone I purchased did not support a few apps I needed. I returned the phone with all the supporting documents the next day after the sales person said I can return it within 7 days of purchase, the lady at the store was wiling to assist me until she changed her story saying she can't exchange the phone However she says their was scratches on the screen, after she said she will exchange the phone for me!!