The handle turned in the balcony door and stopped performing its functions. A friend recommended contacting companies that sell accessories for PVC windows. Several companies said that such fittings have not been produced for a long time and there is no chance of finding the same (the window is about 10 years old). But TBM told me on the phone that they would try to pick it up and explained in detail how to remove the swing-out mechanism of the door leaf. The office measured the size of the mechanism and found the mechanism I needed. Many thanks to the head of the department, who clearly showed and told how to install the mechanism and adjust it, the possible causes of the breakdown. Everything came to the door, it works perfectly.
There is no customer service. It is unclear with whom to conduct a dialogue on the order. The manager immediately pointed at the door without looking up. Since a client was sitting next to her, she decided not to bother with unnecessary communication and apparently asked me to wait outside. After the visitor or client left, no one invited them to enter the office. I would also like to add about the dissatisfied faces of the employees. Well, just like the post office or the registry office at the clinic.