Government non-service

I ordered five of the same items from overseas, and they were dispatched the next day. Two months later, our local post office at Welobie advised by SMS that one item was ready for collection.A week or two later, another SMS, and we collected. After another month, no more notifications,so we went to Welobie, and were told that the other three items had arrived, but after a month, they send these items back overseas! They said they always SMS,but I can tell you they did not. We were especially awaiting notification, but because we were aware of post office problems,we did not keep pressing them. We then received a notification from the main SA Post Office to say that our goods had been forwarded to Krugersdorp, which seemed to deny that they had been sent back overseas. We rep**** to this email, asking how we could get the remaining items, but the email was not accepted. Another try was again not accepted,so we tried other email addresses, with finally an email which they received (***) This and two further emails have gone unanswered. It is now over eight months since placing our order, and we still don't know how to get 60% of our order!!!!! Somebody please help.