Last week, I initiated a Roth IRA rollover from Brokerage A to Brokerage B. On Friday, the check from Brokerage A was cashed in by Brokerage B, and the funds became available at Brokerage B as of this morning.
However, it appears that Brokerage B cashed in the check twice. My account balance at Brokerage B is now exactly double my original account balance that I was rolling over from Brokerage A.
What do I do? Who do I report this to? What are the legal/tax implications of this?