Bitcaan on Nostr: I would guess because your monthly usage was over a certain percentage "out of ...

I would guess because your monthly usage was over a certain percentage "out of market" or however they phrase the roaming stuff.

Back in the day when long term contracts with the telecom companies were standard, an easy way to get them to cancel your contract so that you didn't get hit with a penalty for cancelling it yourself if you wanted out was to make sure a certain amount of your usage was out of your home area. That would drive their cost for your account up and they had a policy of dropping people for that