Update: I did get a call from Culligan addressing my concerns. They were able to make some small concessions, which is why I gave the amended rating. However, their policy still needs to change. Most plumbers/repair services require a minimum payment for a call (like $75). However, once they diagnose the issue, that amount is then counted toward the final balance, not added on top of it. After this repair, I will be using my home warranty service to repair any issues I have and cease using Culligan for repairs until they change this policy.