WeChat R100 barcode loses customer

On Tuesday 12 April 2016, WeChat posted R100 barcode that can be scanned into your wechat wallet. Anyway I did that and the money reflected. I then decided to cashout the money but when I went to the atm it stated Invalid Voucher no. I tried it at different Standard banks. I then sent wechat a msg via FB inbox and I was told someone would call me in the morning. Up till now no one has even bothered to call me. Instead I've been communicating via FB inbox and instead I was given their customer care number. I'm not wasting my airtime. I was inboxed again and told that the money would reverse after the cashout voucher has expired. Friday 15 April 2016 I went to the atm again and it still said invalid voucher no. I then decided to wait till the voucher expired and see if it reversed. it didn't reverse and I inboxed them again and this time I was upset because of their lack of customer services. I then received a message stating that the head of customer care will call me the next morning. Well its too late now because when I checked, the money reflected. How can u treat customers like this?