Best Sink Troubles in Phoenix AZ

I have several issues going on. I have multiple filters. I had another company out and they were unable to fix it but told me a valve was broken and needed replaced. They recommended Parker and Sons. It was great because they were able to come out first thing the next morning. The service guy was able to replace 2 of the 3 filters but was unable to change the 3rd filter because he didn’t have that particular filter. He was able to determine the valve did not need replaced saving me over $600 (I even watched him turn the valve off then back on). They sent another guy that afternoon to replace the 3rd filter, and oddly enough, the valve was now not working, again. I watched it work that morning and watched it not work that same afternoon. He recommended to replace the valve, but also recommended adding a valve for this particularly troubled filter to make it easier in the future. So the guy that came out in the morning is coming out tomorrow morning again to replace the valve, add a valve, and change the filter which the 2nd guy left with me. So it’s been a process but their availability to send someone to service same or next day (I’m about 45 minutes from town so I’m not as easy to get to as someone who lives in town), overall they’re getting it done for me. Just requires a bit of patience since their service people specialize in different things and in my case, it is wasn’t a one man job. Overall I’m happy and will call them in the future since the local company I used prior is no longer in business, I think they retired.