Dawn Wing? more like evening walk?

Did a course online through GetSmarter and University Of Cape Town, upon completion we were said to get our certificates delivered to us. We then had to give our addresses to the campus which then verified our address twice. On the Thursday 1st Feb, i receive an email saying my certificate is with Dawn Wing, however I only check on Monday 5th Feb, they on the 2nd Feb claim that my address is incomplete on their tracking, even though i sent it twice (checked the online campus and what do you know my address was correct) So why no phone call? i only checked on the 5th feb that was three days where no one tried to contact me for "correct" address? So i have to phone them and tell them the full address in that same day the 5th Feb Dawn Wing sends me an sms saying its on route and i will receive it today, so i ask my boss if i can go home for the day and wait for my parcel this was at 10;30 in the morning, i go home and just after 14;00 in the afternoon Dawn Wing phones me saying my parcel will be delivered tomorrow!! i tell the lady but no you guys sent me an sms saying today i had to take a whole days work off which is R500-00!!! All i got in return was "oh sorry, our sms'es have either not been sending or sending a day early" so i tell the lady im going to have to ask my boss for another day off if they are sending it tomorrow so we put down i call my boss he says no they can deliver to work, Dawn wing then phones me back saying we can drop it off at your work i give them the address and the next day comes, i check the progress of delivery and phone Dawn Wing they still have the wrong address even though i gave it to the manager just yesterday so i correct the address again and they say it will be on its way the next day again!! so the next day comes and they say on their tracking that they tried to phone me which they most certainly did not at all so i phone them and they say a completely wrong address it was not the address i gave them so i correct it again!! at this point im beyond angry how many days in a row must i give you guys the address for you to just ignore? Not to mention the guys on the phones constantly sigh! i can hear you? dont like your job then quit im not making you stay so dont put your terrible attitude towards me when it is you guys who have proved failure relentlessly, so i phone today and you guys still have the wrong address i corrected it for the fifth time, hopefully one year i will receive the R15'000-00 COURSE CERTIFICATE and then maybe in about two years time ill be able to switch jobs, will that be enough time for delivery Dawn Wing? or do you need another year, highly doubting a response from you people as i have emailed twice now and still nothing, terrible service is a compliment for Dawn Wing.