DHL has not delivered my package in over 5 months or likely stole it

I once sent gift package on 17 December 2019 to someone based in Zimbabwe. The package arrived in Harare in January 2020. Upon arrival the receiver was told by DHL Zim that his work agents need to clear customs. This process never happened as the receiver was being sent from post to post by DHL and BOC Gases Agent. In March again the receiver tried to retrieve the package only to be told that the package is not with DHL, which was a lie because DHL later confirmed that it was in their store room. He went again to DHL to which he was told the BOC Gases agents will call him to clear the package. Now its June 2020 the package hasn't been received. A follow up from DHL said the package was sent to Customs on 1 February 2020 because the same receiver who was being denied collection by DHL didn't collect. The stories from DHL really dont add up except that the DHL personnel in Zimbabwe stole the package and said they sent it to customs. I have been trying to get to the bottom of this matter but Ms Buhle Sekoboane who happens to be customer manager is in a wrong position. I called DHL for reimbur*****t and apparently she is the one again who is suppose to deal with this matter. She has been quiet with all the emails sent and doesn't pick up the phone. She knows obviously that DHL Zimbabwe *****s parcel. That's why she was quickly to defend the sister company without even asking the receiver on why he couldn't pick up the parcel. Dont use DHL if posting things to Zimbabwe its employees are ******* there. If the company wasn't aware of the theft obvious they would have tried to come to a solution which doesn't affect the customer. Besides Ms Buhle Sekoboane who else is relevant in solving this case DHL International? I need a reimbur*****t. I have used DHL many times but this one is a low blow.