Bad Service Provider/DATA/AIRTIME/Private Callers

Wow I once left Vodacom and Came back recently on a contract and its been 15 days and I feel like it has gotten worse, how are they being allowed to be this bad,

1. All incoming calls are private numbers why is this a thing, 2. After 7 days I wanted to cancel the contract because when I got the phone the duel sim features are disabled and they said I can and call cut spoke to someone else I couldn't.

3.Very bad customer service phone cuts they don't call back it doesn't make sense.

4. The first proper month was July and I was not given my data so while I waited I used the airtime and guess what 2 hours after I got to work R300 worth of airtime was finished.

5. I really would like to cancel this contract please if someone can help please I would like nothing else to leave this network for good.

It's the worse truly.