2 new sim cards still no connection

Oh my were do I start bought a phone yesterday with a new sim. Did everything including Rica. Got home made calls and also went online however I could not receive calls. Called vodacom and they said there is no problem. Today still have the same problem and i took back the phone an bought a second sim and same problem. The store called vodacom and they admit to having problems with sims bought today and yesterday and are busy fixing it. They took my details however no feedback still. How useless i have a new phone with two non functioning sims. I have had it with vodacom their don't care attitude is on another level. When i call again i am given 10 different reasons.