New contract - no carry over of airtime and no international calls with airtime

Hello Vodacom . . i am a little disillusioned with my upgrade. Firstly it appears that i lost a lot of minutes and data that didn't carry over to my new contract. Secondly i can't make international calls with my new contract without buying airtime . . that just doesn't work well for me. I think that could/should have been explained to me . . although it just doesn't make sense and is just not a good customer considering way of doing business. I've always loved being with Vodacom and have been loyal with you and have a few contracts with you, but i am disillusioned with this kind of treatment. Thank you, Robin