Parcel not delivered or missing

I am expecting a package with tracking number RI***ZA it has been through customs and released to be delivered 16/04/2015.<br> <br> The parcel was sent out to the wrong post office on 17/04/15, it should have gone to silverlakes but was sent to Hatfield. I then went to Hatfield to collect as a 1st notice was issued by them, but when I went to collect I was told it was sent back to Tshwane mail centre as it should have gone to a different post office. <br> <br> I have tracked it online, only to see it is now back in the JHB mail centre showing status of in transit since 22/04/2015. I have sent an email customer services without any feedback. I am unable to locate the parcel and I am not sure what I should do to get it delivered to my post office. I am even willing to go and collect if I only know where to for collection.<br> <br> Regards,<br> Riaan