Yes, it's a good idea to clear up any misunderstandings.
I had my eyeliner done by one (1) vendor, one (1) time, in 2006. It took 10 years to fade. My permanent makeup had not been touched in that time. I never had my eyebrows done before - ever, until I got to you. It was insisted upon me I should do my eyes twice to "colour correct" and to do my eyebrows. "You should do it, it will be great" I was told. I kept going back to you as it continued to change colour. I was told my body was so low on iron, that it was "stealing" it from the permanent makeup, which is why my black eyeliner went blue, and my brown eyebrows turned orange. So why would I be told that, if there was no iron in your ink? I also still have the information sheet from Phamtastic, stating the touch up is included as long as it's done within the first 2 months. I will post it on here for your reference.
I believe that the misunderstanding is a client mix-up. The only vendor I visited multiple times was yours.