Extremely annoyed with the bad service

Hi There i bought my daughter a tekkie at street fever Baywest 19/7/2018. They had a special up to 70% the lady that assisted me (manager) i asked her if my daughter did not like the tekkie can i bring it back for my money and she said yes. On the 26/7/2018 i took the tekkie back as my daughter said it hurt her. They look at my tekkie one of the sales guys. They said the manager that help me is coming in at 11oclk they will send one of yhe staff to my store. Curtley very friendly guy came to my store as i work in Baywest said that it is sorted but the manager asked if i can come Saturday for my refund as they dont have money. I was patient from Thursday. Today 28/7/2018 i send my staff down as i was busy to do the refund she came back and said that they don't want to exchange as they see that it was worned. I did not check the tekkie when i bought it and i have no clye about tekkies. I told the arrogant Area Manager which didn't even wanted to here my side. I told them my daughter did not have it on. She tried in on and walked in the house and said it hurts her. Firstly the manager said i can bring it back. Secondly when i was there Thursday why didn't they check properly and tell. Why let me wait 3 days and tell me this. Mr Area Manager when my staff was there the first time there was a client also who took something back to Greenacres and they send her to Baywest as Baywest had the stock. When she came to your Baywest branch they wanted to send her back also it was worned, she and her husband made a big fuss and there refund was granted. Why certain people get special privileges. I want my money back as im very annoyed with the service i got as i had to go back twice for nothing. I will never recommend anyone buying at your stores again. Ver very upset. I want my money