Vodacom is pathetic and couldn't care less about their customers

In February I contacted Vodacom to change my voice bundle from 500min to 250min effective from 1 March 2019. This month I noticed that I was charged pro-rata for February as well, I didn't even get the minutes and even if I did I didn't want it as I already had 500min which was to much. I phoned Vodacom and they indicated that they have escalated the matter, well I never heard about Vodacom again, your service is pathetic I am soooooooo disapointed that I moved from Telkom to Vodacom, it's been issue upon issue with Vodacom with no resolution. Vodacom never comes back to you after an issue is raised. Kindly sort out this issue asap.