Jhb International Mail Centre (Hub)

I have been informed that a parcel of mine has been sent to the Jhb International Mail Centre, but I cannot get through to the call centre on any of their phone numbers: 27 11 *** and *** - But there is no answer, it just says that they are experiencing high volumes and then the call is terminated!<br> <br> The parcel tracking number is ii***za - It needs to be sent back to the Bergbron Post Office.<br> <br> Not happy!