Why did Vodacom discontinue the Smart S package

Hi, <br> <br> My husband has been a loyal Vodacom client for 18 years and I am a loyal Vodacom client for 15 years (first as prepaid and then as contract customer). We badly want to upgrade to the iPhone 6 contract, but for some reason Vodacom has discontinued the Smart S contract. Now, we are looking at other service providers, but I want to stay loyal to Vodacom. Please HELP.<br> <br> Kind regards<br> <br> Georgia<br>