Store manager outright Refused to assist us with bra Defect complaint

My daughter purchased a Elomi bra to the value of R1000 2 weeks ago.The consultant advised us it would be best to alter the bra to get a more comfortable fit.In thr first few days of wearing the bra the cup didn't fit comfortably and my daughter started noticing the bra's cup size didn't fit all of her bust comfortably and the bra's wire was bulging inbetween her breast.I then called the store to notify the consultant but was advised that she can't make futher changes to the bra because at the time of purchasing the bra it did fit to my daughter's bust size ..This bra is definitely a defect and has to be exchanged but they outright refuse to assist with my daughter. In the first place why did the consultant advised us to purchase this bra when she knew they didnt have my daughter's size bra.We went to the store last week to refit the bra and the store manager saw for herself that the bra was bulging and wasn't fitting comfortably but she refused to assist us even though we were unhappy.

I will be lodging a complaint with the consumer protection act.