Is T-Mobile really going to charge me more AFTER I switch carriers?

¡Hola, @badbri69​! Let me start by saying I'm sorry we had to see you go! I totally get wanting to have a clear picture of what happens after you've ported out -- this is definitely something we should discuss with you before you port out. I'm very sorry if we had the opportunity to set this expectation and dropped the ball. 😥

When you port lines to another carrier, this effectively deactivates your line and cancels your service, which disables online account access. If you had a family plan with remaining active line(s) (that you haven't ported), you should still be able to log in to MyTMO using that/those number(s). Was this an option for you? Also, if this is a family plan and you have additional lines that you haven't ported out, please Community-2153​ ASAP to discuss what you'd like to do with them and make sure you have all the info you need!

Regarding charges, I know a lot of very knowledgeable folks have chimed in here -- you won't continue to accrue charges after your service is disconnected by merit of porting. Postpaid service is a monthly service -- so if you're in a bill cycle that's already begun, the charges have already been assessed and those won't change unless you also have installment plan balances that might be pending to bill out now that the account is cancelled. But you shouldn't see any additional charges for uso (toll calls, downloads or services billed to the account, etc) because you're no longer using the lines.

I hope that all makes sense! While we're not able to review your final balance or check for pending EIP charges from this public user forum, if you do have questions about your balance our T-Force team on Twitter or Facebook, or our Care team over the phone, are more than happy to help. If there are any general questions I can help with, please don't hesitate to ask! I know we've lost your business for now, and from the sound of your original post it doesn't sound like you had the kind of experience we'd like to provide -- but we'd like to at least make sure we can leave you with a good *last* impression, if nothing else. <3