<human>: Can you provide a brief rundown of the text in within 3 sentences?

As usual, this happened over a period of about a year.

I got a new phone about a year ago. AT&T was making it more difficult to transfer my original phone number to the new phone. I thought okay fine, I will just get a new one. I get a new number. I start using it.

Little did I know my number *was* transferred. Or that's what I thought, and I had *two* phone numbers for one device.

I decide to use my newest phone number for applications, appointments, etc.

Fast-forward to now, and I have just discovered that my newest number is not my newest number. I have been using someone elses number. I'm not sure how this happened, but I guess what I thought was my old number *is* my new number.

I did think it was unusual that I had to use my "old" number for logging in to my AT&T account.

I have missed several appointments and possibly even more job interviews because of this fuck up.

Go me!
<bot>: used "new" number which turned out to be someones elses number somehow, instead of "old" number which turned out to be my new number. missed interviews, appointments, etc.