I played Pet Rescue Saga on Facebook a few days ago and tried to use my secondary account to pay a couple of times. It was rejected the second time so I thought I'd gone overdrawn.
I've just checked my balance online and I'm comfortably in credit... nowhere near overdrawn so I don't know why it was rejected!
I'm in credit with my primary account too so I've just got to not spend anything else and I can comfortably move another £100 into each of my savings accounts too!
There is definitely a Higher Power out there looking after me!