VODACOM DEDUCTS DATA FROM YOU

I had a positive data balance last month which apparently does no carry forward! According to the customer care line we need to just know that purchasing data on the 31st of the month will expire the next day because its a new month and Vodacom will from time to time implement such rules as its in their contract to do so just as they increased contract prices at will. Seriously considering the R10 000.00 allowance from Cell C to change my 4 contracts!! it appears Vodacom will change individual rules on individual contacts as they see fit and then just fall back on their contract that says they may make changes as they see fit even if its against the consumer protection act! Unbelievable!