No communication regarding tariff increase

I recently took a look at my latest invoice from Vodacom and noticed that there was a substantial increase in my package costs. When I called to enquire about this I was told that there was apparently an increase in the Tariffs on some of the packages and these were communicated to all customers. I have NEVER received any communication of this sort but the consultant/supervisor insisted it was sent out to me.

My Contract was upgraded recently and I was given NO indication that Vodacom can increase their prices whenever they feel the need to as I was under the assumption that the package rate agreed upon upgrade would follow through to the remaining of the 24 months.

Vodacom's communication, to be blunt, SUCKS. This increase was also quite substantial (10%). Also, when browsing their website their is NO communication there either which informs customers about the tariff increase - it comes as a surprise on the bill. I think the customer service/communication has just gotten worse over the years.

I have always been a loyal customer over the years however in this circumstance I DO NOT recommend anyone taking out a contract/upgrade with Vodacom, ever.