I shifted three kids mobiles across to Kogan not long after they first popped up.  They will be able to call or txt their mother and I any time.

The first year I had them on the 1Gb/month 365 day plan and they found that a bit restrictive.  At the anniversary I put them onto the 4Gb 365 day plan which makes it much less likely they will run out, but they still can't be wasteful.  They view their remaining data using the Kogan Mobile app.

If you buy for 365 days, you are stuck for 365 days as no plan changes are allowed.  If you buy a new plan, you forfeit whatever remains of your current plan.  Their deals (parcularly their anniversary specials) are very good, but you do need to consider whether your needs may change.  For most consumers who's usage is pretty predictable and are capable of doing their own troubleshooting with minimal online help, I definately encourage grabing the deal.

I've never had to contact the support.