@ChadOliver I have the same problem as do a lot of other ppl based on posts on community. My phone number transfer started about the same time as yours. I'm getting the same Forbidden A1 error trying to log into my account. I put in a direct message to customer support about 10 hours ago and still no reply. I'm assuming they are busy and it (was) night ... But I'm surprised there isn't some generic solution to fix this yet or at least some communication here staying they are aware of the problem and trying to fix it. Rebooting your phone won't magically fix an account problem. A support ticket can't be filed because its in the My Account area, which is on the other side of the Forbidden A1 error. So just waiting for customer support to respond to a direct message here on community is our only option.
Out of curiosity, did you get a message from *611 about 30m after you started your activation/transfer? That is when my account locked down.
The message read: "You have successfully created a new PIN. Keep this number safe as it'll be used to authenticate your identity."
Calling *611 tells me my number has been temporarily disable due to a zero balance and that my auto-renewal was yesterday. I'm assuming that is why my phone isn't working but isn't (ppl on Telus and Public can call me but I can't answer the call). I'm assuming the account issue is the direct cause. My next autopayment will happen on March 7th according to *611. I can't get more details without the PIN, which I don't have.
So that's my additional detail to add. Not sure it matches your, however.
