I ordered a uv filtration unit from them as I need...

I ordered a uv filtration unit from them as I need a nsf certified unit that is at least 12 gpm. I ordered the one that states on their website that is 12 gpm certified. It came a 10gpm flow restrictor so I called was told I would be called back, that didn't happen. So a few days later I called back sat on the phone for a little more than an hour was told I might be called back by a supervisor as they couldn't answer why it had a 10 gpm flow restrictor. Got a call back from a supervisor who said they would look into it and call back. He called me the next day and said it is only certified at 10 gpm. I opted to return the item but they will not pay shipping even though their own website says it's 12 gpm certified (wish I could add screenshots as it is stated in 2 separate places) which is what I need and thought I bought. They offered a discount code for the purchase of another 15 gpm uv filter as he said he checked and that one is actually 15 gpm certified. Figured the discount would offset the shipping cost so it's a wash. After looking into that system a little more on their website says it's 10.6 gpm certified not 15 gpm which is not what I was told. Figured give the discount code a try and it doesn't work. They are not an honest company and are willing to lie to get business. I would not recommend them to anyone unless you want to have them sell you something that doesn't meet the specs they list online or tell you over the phone then will make you pay to return an item that is of no use to you.