MTN 3GB for r69

I understand offering great data deals but purchasing data and being told how long it will last is not consumer freedom. 3GB at R69 sounds great, until you see that it's 1GB per day and expires in 3days? I'd prefer having the option of rather paying more and purchasing again when I need to, not when MTN tells me to - not everyone consumes 1GB in 24hours. I will soon be porting to another provider that allows the customer the freedom of choice.