Error- This store URL is already in use.

Now how on earth did I create more than one feed... and how can I
correct it without that handy dandy "contact us" form anywhere in
sight? (Very frustrating!) I even tired to delete it and re-do it, but
I still get the "This store URL is already in use" message.

View this store gives me the dreaded: "did not match any products in
Froogle" message.

Any idea how to retrieve the store ID in which I apparently sumbitted,
is in use, as opposed to the only one I can see in my account? (weird.)

TIA,

Peggy