Product review (1 stars): Really bad taste, like dirty rubber
first filter worked fine, second filter had terrible taste after flushing the recommended volume of water so i threw it away and installed third. The third is better than the second but still has chemical dirty water taste. I will never but this product again, unfortunately the return date past.

Then the seller wrote....
I apologize for the inconvenience with your purchase.
After checking your order, it appears it was fulfilled by Amazon.
You will need to get in touch with Amazon directly to make sure you can receive a reshipment or a refund.
Amazon does not share its proprietary warehouse and order notification methods with us.
Let me know if you need any help with this matter.

Than i decided it was a lost cause to pursue it.