Vodacom. Again.

Once again Vodacom fails completely to deliver the service that they claim to deliver but they will never fail to bill you. Sms's dont deliver, whatsapp is constantly searching for coverage and calls fail to go through or are cut if they go through. How long will this company still be allowed to continue with this?? Are they not covered under the consumer law because it surely doesnt seem like it. If you complain at the Vodashops you are simply told that the contract states that they only have to try their best to deliver the service but if they fail the client should accept it. How can this be acceptable or even legal? But it seems that they are somehow above any local laws!!