The new cables from Telekom are so thin, there's no pulling anymore. Normally, a small sponge is blown through first, and then the cable. We also had problems at the beginning, but the technician really gave it his all, and after 5-6 attempts and 3 hours later, the cable was in.
The conduit or double conduit going into the house should have already been connected by the electrical company or the company commissioned by the network operator, I can hardly imagine that it was handled so carelessly. Those are the absolute basics.