False promotion - Not taking accountability.

Vodacom is running a promotion on as per their website. Customers buying airtime for themselves or another number on the VodaPay App will qualify for 30% airtime extra. I have performed 4 transactions and none of these transactions have Vodacom honoured their extra 30%. I have tried speaking to the call center 3 times now to no avail. They referred my to the VodaPay team that confirmed this is an issue that Vodacom has to resolve. This is truly frustrating.