Out of bundle data consumption

I have a prepaid Vodacom account.<br> I make use of Data bundles for occasional Internet connectivity when I do not have access to Wifi.<br> When my data bundle runs out, billing starts to occur at a ridiculous Out of Bundle (OOB) rate of R2 per Megabyte.<br> This rate has not changed in ages, whilst cost of high volume data has dropped significantly over the last 10 years.<br> It does not appear that I have an option anywhere to disable OOB data consumption.<br> I have researched on the Internet and OOB is an issue that has been raised multiple times.<br> Sometimes I receive SMS's advising that my data is running low, other times not. When messages are received, often they seem to be delayed or too late to prevent OOB data consumption.<br> I think that it is irresponsible of Vodacom to not allow OOB to be disabled in order that Subscribers can have better control over the consumption of airtime.<br> If the facility does exist, then it should be activated by default in order to protect the consumer i.e. OOB should be an opt-in feature.<br> If this facility does not exist, I think it would be a good idea to start a petition in order to encourage Vodacom to consider adding this commercially responsible feature.