I will start by saying that my Invisalign treatment went smoothly and my teeth look great. But I have been owed a £300 refund for a fixed retainer that I have paid for but am no longer receiving, for two months now. I call and email the practice and head office every day, and when I do get through to someone (which is not often), I get passed onto someone else who is also unwilling to help. I am now being completely ignored and having to pay to take legal action against them in order to receive the money that I am rightfully owed. The customer service and lack of communication is appalling, especially when your treatment is over and your money is in their hands.