While I'm pretty sure that this will be shot down, I'm going to go ahead and present it as a target.
Ting maintains that they want a simple system that doesn't require you to think about how much each individual call, text, or data connection is going to cost. They also maintain that, in so far as it complies with the above, they don't want you to pay for more than you use.
People pointing out the inconsistency of Ting's policies vs their ethos invariably point out that unless you use the entire bucket you've paid for, there is waste. If there is any other point of contention, I've never read it.
It seems like both sides would be satisfied if Ting allowed any unused balance to roll over to the next month until used completely. It preserves the tiered pricing / usage buckets that keeps billing simple, and it prevents any kind of waste making Ting's slogan of 'No waste, Pay for what you use" absolutely true. Users have less reason to care if they exceed a bucket because larger buckets are better deals. At the same time, Ting can eliminate the 5% grace since being bumped up to the next bucket is more of a savings than a penalty.
If necessary, a person could be made to pay for the XS bucket, which would be added to the rollover balance, during any month they use that feature if there is some kind of per line access charge per feature that Ting has to absorb. Judging from what I've seen of Ting's user base, if Ting makes it clear why they have to charge for a thing, people seem to understand and accept it.
I guess what I'm saying is that rollover wouldn't have to be implemented straight, but the people at Ting might do well to consider if it can be artfully employed to satisfy the users crying foul while maintaining their ethos of simple and fair pricing.
I've mentioned this in two other threads/discussions or what-have-you. If it sounds like I'm pounding on war drums, that's not my intention. I'm just baffled as to why it hasn't been at least mentioned or discussed before.