vodacom makes customer pay for employees incompetence

A vodacom consultant calls me to advise me that my data usage is coming very high! and she can put be in a better package! She never looked at the bill and detail of it! And normally I know insurance and extra data comes to a certain affordable amount! When I call to change my package back to what it was and a payment arrangement! No problem we can do that! I get an email stating my number is blocked and can’t make calls which it’s automatic! Which is fair! When I ask to unblock it they tell me it’s late in the evening and they can’t!! And the superior has load shedding and cannot take my call right now! What I don’t understand is why do they a system that blocks in the evening and u can’t make emergency calls and your mobile data is disabled! Even after making a portion payment to the account! And I also don’t understand they have *********** employees that don’t see the bill throughly and making the customer pay for there mistakes! I mean they should see all the costing and say it’s gonna cost you X amount! I’ve been with vodacom since 2001 on prepaid and a contract subscriber since 2011 and not once did I ever regret being with vodacom! But after today I’m definitely going to be canceling my contract and moving it another network!