How old are you, if you don't mind me asking?

Just a suggestion: Before you hop onto the uncapped internet bandwagon, you might consider determining how much data you really need to satisfy your WoW addiction. It sounds as if you are saying that 10Gb was adequate for you. Do you and your father use the same computer? You say that your father uses it for work: at what times does he work on the computer and use the internet? Do you have some form of income? Perhaps you could scratch together R149 a month for your own 10Gb account [or even the 5Gb account], and log into that account whenever it is your time to use the computer.

I guess you know that when WA speak of off-peak hours, they mean from 19H00 to 07H00 the next morning and all day on weekends and public holidays.