Aramex South Africa is the worst courier company

I have sent a parcel through aramex on the 1st of October 2018 till to date the receiver has not yet received the parcel, I than track my parcel it always shows its out for delivery booom the receiver has not received it, I than follow up with them they tell me they went to the address indicated on the receipt but they can't get the receiver and the drivers are not allowed to make calls like for heaven sakes how will you make someone aware that u at the gate??? Fast forward I call them again on the 15th requested to speak to the manager the lady I spoke to told me they are not available I should however give her my number management will call me I that ask that they call before end of business she agrees they never called so I call aramex again request to speak to management still they are not available they don't bother to even return my call, I than lodge a complaint on their twitter page finally someone acknowledged my complain and called this is round about the 18th or 19th only to be told that my parcel was in a vehicle that was hijacked (the day after I sent) and may have been affected they will however get back to me with regards to the matter till today nothing, I than do a follow up today at about 10am to insist on getting feedback a message for their manager to call as usual they just don't, eventually after calling them abt 3 times today and being put on hold for a good 24/25 mins I got hold of a supervisor who promised to call before end of business today and I'm still waiting.