Poor service with Woolworths online store

I've experienced the worst service ever with Woolworths online store . I bought 2 bottles of champagne online to click and collect, order number ***. Wines were on 20% promotion and on top I had an extra 20% voucher off the purchase. Money went off my account, I went to Greenacres to collect my order and I was only informed then that my order had been canceled. The gentleman by the name of Tshepo informed that he had contacted head office and my money will be refunded within 7 days together with the vouchers . The days have passed with no form of communication from Woolworths. I've sent a follow up email on the 4th, nobody seems to care to respond to my query. Could you please assist and refund me my money, since you canceled my order without informing me and, I've even lost my discount on the bottles of champagne I bought.