We worked with Mr. Beni Mulaj of MHS Haustechnik GmbH for the installation of a gas heating system. Unfortunately, our experience with him was extremely disappointing. He turned out to be highly unprofessional, unreliable, and dishonest. The project was significantly delayed, and he demanded full payment before the work was completed. Because of his delays, we had to postpone moving into our home and incurred additional indirect expenses as a result of his poor management and lack of responsibility. Now, after completing payment long ago, Mr. Mulaj is attempting to shift financial responsibility for his subcontractors onto us by allowing them to send separate invoices — charges that should have already been settled by him. Based on our experience, we strongly advise others to avoid doing business with him or MHS Haustechnik GmbH. It has been one of the most frustrating and untrustworthy business experiences we’ve ever had.