Seriously! Where's my Data?

I've recharged my phone on the 28th of May with R29, whereby I got an SMS for an offer > R10 for 100MB data > which I purchased but never received! So I've phoned the 111 number from my mobile several times now, but the automatic answering service is speaking in a language I don't understand. No options? Same goes for the chat support > there's no support at all...