Vodacom can not provide service

Please be aware of Vodacom's data ****. I have a data contract with them for 10 gig at R 499,00 per month. In order for me to prevent out of bundle rates I put a R 50 limit on the contract which implies that my Router should be blocked if I exceed my contract by R 50,00. Vodacom tells you that they can not be held responsible if this block does not work. I can also not access my data account to see my data usage and I have reported this to them as well. I went over my limit and they start charging 10 times more for out of bundle data charging me R 1700 for 2 gig over. They refuse to reverse the cost and indicate that they are not responsible for their systems failing to block me. This is the exact same system which generates my account and supposedly sent me an sms to inform me I am exceeding my data bundle. So they could send an sms but not block me and I have to trust my account . I can not wait for this nonsense to end and will be going to Cell C where I can pay R 2500 for 100 Gig data over a 365 day period. This is half the price of Vodacoms data package and a ton better. Vodacom , If Vodacom catches 10 % of their clients with this **** it is a massive income boost for them.