Parcel at Johannesburg International Mail center for 18 Days

<p>I ordered some wedding invitations on the 3 January online, the items were picked and dispatched the very next day from China and began its route to SA. The parcel arrived in SA on the 28 January and there has been no movement since then. i received an sms confirming its arrival in SA and the corresponding Local tracking number. i tired all the contact numbers and emails to get information about the parcel but received nothing, the SA post office customer care email address responded by repeating what i had said that the parcel was in JIMC since the 28 Jan and that was it.</p> <p>The local tracking number is RI ********** 75ZA</p> <p>there seems to be no way of tracking this parcel and finding out what exactly is going on, the wedding is in April and invitations need to be delivered to guests next month.</p> <p> </p> <p>Please assist urgently.</p>