Bad Customer Service

I bought gold earrings for my 4 year old grand daughter at Elundini Pharmacy in Maclear which is under Alpha Pharmacy 3 weeks back. Last of last week I took them back because the color was changing and I was advised that the manager was not there I must come back this week. Today I went back and the manager told me there's nothing she can do. She said there's no way that they can change the color unless the person has lot of acid. I told her its for a 4 year old and she was using the ones that were bought at Maclear Pharmacy and they are still good its just that we wanted a second pair. She was very rude and arrogant. She gave me a number for Van Staden which she said I must contact them myself. She doesn't have customer service and manners at all. She's so rude.