We value all feedback from our clients and we are constantly striving to be the best we can be, professionally in the field. A short email, a phone call or a discussion face-to-face are usually the best ways to make any feedback known (be it positive or negative).
From a clinical perspective, the most important thing is to make sure you as a client are making the progress you want to make and are happy about it. If this is not happening getting on to it and addressing concerns or complaints quickly can be the difference between a good outcome or languishing in difficulty. We have commercial reasons as well as ethical reasons for wanting to make sure everyone makes the progress they wish to.
And if anything else is a concern - or if there is some miscommunication we also wish to receive feedback on that too. We value our clients so we value your feedback.