Business ProfileforExpress Water

This is for a whole house water system that has never worked correctly from the first day. The system was installed by a profesional plumber has an extreme prssure drop with brand new filters installed. Upon inspection by the plumber, the 3 stage filter system had deffective 2nd stage filter and it leached carbon into the third stage and plugged it up causing the pressure drop. Contacted the company and through a series of emails it was determined that the filter was to blame and they sent me brand new filters to make good on warranty. installed the new filters, same problem. Under recommendation from the company we did a water test and tried a different final stage filter. Upon installing the third set the same problem happened but this time the first stage had a failure as the plumbeer had detemined the first stage and second stage was defective. I once again contacted the company and they ran me around on emails for 4 days only to try to give me new filters which i did not want because they seem toi have a defect via a third party opinion of a plumbing profesional. Tried a different companies filters and the system works better as per spec. The express water filters only lasted 2 weeks before pressure loss and total failure in 4 weeks. The website claims 3-6 months well short of this time. After the last set of emails the company now refused me refund and only exhange for more faulty filters.