Retaining Wall Contractors-Acadiana Region

Does anyone have experience with contractors who build retaining walls? I probably need two for my future landscaping. Ive talked to a few landscape companies who say they can do it but it seems like no one really specializes in them. And when they do mention retaining walls I can see the dollar signs adding up.

I don't think I need any piles or things like that driven in the ground. im not in a flood plain. I was thinking railroad ties or something like that as a solid foundation.

Ive dealt with some contractors lately who bite off more than they can chew and while the price was good the end result normally means I have to do it myself.

I would have engineered drawings from a civil firm more than likely but when I go to the Acadiana home builders website it leaves a little bit to be desired for contacts.