Horrible service from Staff members

I'm so disgusted with Edgars Sandton City. I made a purchase of Perfume and wasn't happy with the Quality as it was very weak. i took it back to Edgars and told them of my problem and they gladly took the perfume as it was still full and only used once. they told me that it will go for testing and i will be contacted after 3 weeks. I took the perfume back on the 3rd of July and waited up until 3 weeks passed by. i called back Edgars Sandton city on the 28th of July and spoke to Hazel, and she confirmed that she will call me back on the 1st of August which was a Monday, i never received the call back from Hazel or anyone from Edgars for that matter and i have been trying to contact them ever since. they leave their phones ringing and never answer them. on top of that i was never issued a reference number or anything to show that i left my perfume there as they took the slip also.