Late deliveries

Um happy with my purchase but totally unhappy with the delivery process. Post office courier r expensive while take long long time to courier parcels. I wish there should be an option like DHL courier or buffalo couriers. It took only 4 days for the parcel from China to South Africa but took a month and a week for post office couriers to deliver my parcel while parcel already in the country. I always buy items abroad n it only take 2 weeks to receive them, this was worst late delivery I've ever received.