Ran call for no water pressure in the hallway bathroom. Discovered that the hot side had a constant drip and both hot/cold had no water pressure. Ended up flipping the the hot side cartridge which fixed the constant dripping issue. Then I had to install a new shower head/shower arm since the existing ones decided to snap off inside the threads when I tried to remove them. Hallway shower is working as it should at this time with no issues. Waived the $199 dispatch fee since we were just onsite yesterday, but I did charge for the new shower head/arm. Sent copy of todays invoice to homeowners email. Homeowner will contact the office to pay the remaining job balance.