Roebic Laboratories Roebic Septic Tank Treatment

The picture shows the CONCENTRATED container that treats 1500 gallons. The product I received is the NON-CONCENTRATED container that only treats 500 gallons. Its not worth it to me to pay the return shipping and I cannot find any mention of this in a description. I feel like I was ripped off.

The picture of this product is wrong. The one I bought only treats 500 gallons. When I ordered this it shows a k37 bottle that treats 1500 gallons. Very fraudulent….