New leads are being tagged "buyers" instead of "leads"

Hi!
When we receive an email from a potential customer they are being automatically tagged with the "buyers" tag instead of our "leads" tag. Since they have not actually made a purchase we would like them to be tagged to "leads"..... examples are customer Ids 30191 and 29918.....how do I fix this so in the future the correct tag gets assigned? thanks!

Thanks for bringing this issue to our attention. We have addressed this issue, please let us know if you continue to see this happen.

ok great thank you!