Neglecting to send sim with handsets

I upgraded with vodacom last week Wednesday and received my handsets yesterday, only to find that vodacom neglected to also send the correct simcards as the previous phones used micro sims and the upgraded phones use nano sims. When I phoned vodacom yesterday they did not want to own up to their slip up. Now I sit with handsets I am unable to use because I have to wait another week for delivery. When I phoned this morning to get the tracking number there isn't one meaning sim cards are still lying there after I was told they marked my parcel as urgent. This is really unprofessional and NOT going the extra mile especially since I pleaded with vodacom yesterday about the urgency. Why should customers be penalised for your slip ups? And I have been a very loyal customer of vodacom for years now. I have a good mind to cancel everything and take my business elsewhere...