I have purchased water filters from the Water Filter Men over the past four years and the delivery has been fast and the products have worked without any problems. This last time they sent me a 6 month unit instead of a 12 month unit that I had ordered and paid for. I wrote to them through their website - no reply. I e-mailed them using my e-mail - no reply. From the other reviews customer service appears to be non-existent. This is not good for a company and I shall most probably never order from them again unless they do con act me to sort this problem out.