2004 Honda accord v6. Transmission problems?

So i took it to honda for steering pump and they replaced it. After that the cts light and triangle with exclamation mark appeard on the board. And also there was delay after switching gears. Now my transmission had problem theres no power and feels like gears arent engaging. So i did a flush. It was all dirty
After driving it for a while started having problems again. Checked the fluid and looks bit black. Doesnt smell burnt
And i only drainned it and filled it up. So wasnt a complete flush. Should i call honda and complain that after i took it
I started having problems?

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