A very angry unhappy customer

I have a complaint I was treated bad by boitekong mall tekkie town staff they called palesa Gillian I did a lay bye on the 27th October 2018 for 3 pairs of shoes then I released the laybye 22 December 2018 so unfortunately the ada pair ddnt fit my daughter so I returned them for a bigger size 23 December 2018 I was told I cud not b helped because the shoes are dirty I was evn asked to leave the store I must go home nd make sure the pair is identical nd received the shoes like tht i will also include the pictures I need to know tht is ths how tekkie town treats their customers after I paid a huge amount of money i was nt being treated like a customer I need ur help because I'm very angry