Give back my money Woolworths

I've never been so disappointed in Woolworths since they claim that their customers come first. I ordered a pair of shoes 21 January, two weeks later after I phone the courier company they tell me that my shoes were sent back to woolworths. Then I phone woolworths who then tells me that the shoes are gone but they will refund me. After phoning their customer services another 3 times, I have still not been reimbursed. Honestly they have failed to pay me my R599 back