Vodacom is Nonsense

I took out a contract phone from vodacom online. They called me. Everything went well I didn't wait long for the phone. However the problem started when I had my phone. I didn't know that the sales consultant failed to share the billing part properly with me. He left out a lot information. One of them that I would be charged an additional R152 once off. I had know idea they deducted it from my account this is outside of what I am suppose to pay for the phone.. I could only receive unknown calls. When I asked vodacom to fix that I was tod that in order for me to see who is calling Me I have to pay R9 monthly. He put on an open line without getting my consent. I wasn't aware of it until I saw that the charges are just increasing. I feel like vodacom could've done better. I regret taking out a contract.