Parcels gone missing

I have written to you customer services tracking my parcel to which on 16.08.2018 Pamela Boroko responded and told me that my parcels were at the central hub and they were experiencing backlogs in terms of distributing. I went to my local post office this week and the parcels can no longer be tracked. My tracking numbers are RX ********** 40CN and RE ********** 25SE. What happened to my parcels as this Pamela is no longer responding to my emails too.