Mexican Singer Ana Barbara -- Wells Fargo Cost Me Over $1 Million!!

Wells Fargo has enabled two crooked employees to fleece a famous Mexican singer out of her hard-earned money ... so claims the performer in a new lawsuit.

Latin Grammy winner Ana Bárbara accuses the bank and two of its employees of opening up several accounts and then taking more than $416k. Bárbara, who speaks limited English, says she trusted them when she signed up for the accounts.

Bárbara -- who's sold over 6 million albums -- claims one of the employees fessed up to the theft. And now the singer also wants Wells Fargo to pay nearly $900k for loss of income after claiming she had to cancel concerts in Mexico and Bolivia to deal with this mess.

Bárbara accuses Wells Fargo of creating a corrupt business culture that presses its employees into fraudulent practices to meet unreachable sales. The lawsuit points out the L.A. City Attorney's Office has gone after the bank for these practices.

We reached out to Wells Fargo, but got no comment.