Home owner in GTA

We have had this Rain Soft water softener system for the past 7 years. It was a costly investment, approx $10,000 when purchased back then. As the contract states that it is a lifetime warranty for parts. The service itself is not under warranty, nor are the filters, nor is the resin contained in the softener tank. We have noticed the water has not been as soft as the previous years and decided to have a service person come check the big system in the basement. It seemed that the tank was not regenerating or pumping the water out, and thus the water continued to get harder, soon we were drinking city tap water. The service tech came out for the call twice and still was not able to resolve the hardness of the water to our satisfaction so we called the service manager, and the manager was not helpful either, instead we were given the run around on why it may not be working. In any case we figured that the resin may need changing, but their service manager states that the resin usually last for 10 years. We tested the water daily and weekly and still experienced the hardness in the water and was frustrated with the telephone tag so we gave up. We will not invest in another Rain soft water system in the future.