So I'm suffering with this problem too.
They are so incompetent that they don't even know have people who know enough English to write the policy correctly. If you wrote the policy stick with it. If you wrote it wrong then change it. Truly incompetent.
Next for those of you saying they need to recoup their $70 that's not true either.
For prepaid customers the only rules are 60 days of service and $50 top ups. These dumbasses have a plan where you pay $1, $2 or $3 a day and pay only on days you use it. So basically you could be on that and not use it every day and contribute only $50 to them. Not to mention prepaid customers pay $650 anyway.
If they really needed to recoup $70 I'd pay them their ****ing $70. I'll buy $70 of credits right now. But their stupid policy is a big waste of time. 60 days? If want $70 here's $70. Unlock it already. It's paid in full.