MTN gives the wrong voice bunble and will not rectify it

I bought a 900mins MTN all net Voice bundle with ebucks. I have received 30mins per day for 30 days, this is an everyday bundle which I did not buy. I need the 900mins to be available as and when I need to use it. The description is "MTN 900 Min-All - Net Bundle -Valid 30 days" Now I will be send from FNB to E bucks to MTN and they will blame each other. Please rectify the bundle and give me the 900mins all net voice that I bought,