No choice given to Customers - Deal with it

Felt the need to join Hello Peter after failed attempt to explain twice to Vodacom the issue.

Problem is with regards to premiums increasing suddenly after an SMS is sent out by Vodacom.

Before May, I received an SMS stating that my Top up S+ contract will be increasing and an extra 150 mb of data will be allocated each month. Problem was this is that as a consumer where was my choice in this? the contract I signed was for a specific amount for specific benefits. So Vodacom can all of a sudden just decide to increase premiums because they giving you more? so by this logic if they feel they want to give you an extra 10 gbs a month or 1000 minutes they can just raise your premiums by a few hundreds and you wouldn't have a choice in the matter.....terrible customer service and negation of a contract signed with them!

Contacted Vodacom twice to address this 1st time - query was closed because they sent me the same SMS I received previously informing me of the change

2nd time - consultant advised I would need to downgrade my contract to something more affordable! so now its my inconvenience and not Vodacom's fault at all. Again what was the use of signing a contract in the 1st place

Felt the need to bring this up on this forum, not because of the amount but the principle behind it and the question still remains, what's stops them from doing the exact same thing in the future and forcing it on customers.