Disgusting. The company is trying to position itself as specialists with a responsible approach to business. In fact, contractors are working. Installers know their business, although it is not without sin. What can not be said about the measurers who are trying to squeeze the maximum amount out of you and, in addition, are poorly versed in this. The contract is bonded, in order to solve warranty issues, you have to beg to come and solve their own shoals.