Deal with it every day and the waterworks really shouldn't have installed it. But there are also different house entries. That's just how it is with us. The electricity supplier acted correctly. Don't you have a fixed contact person there? That everything always has to be done by email, etc. It takes about 3 days until both parties understand where they stand. For me, everything feels like it happens by phone with a maximum of one appointment confirmation by email and it works. It would be too stupid for me to try to explain such relatively diverse topics in X emails. Call them tomorrow and explain the situation. Presumably everything is still dug up? No idea how long the waterworks will need, but the electricity supplier needs a maximum of 2-3 hours for the sleeve (box etc. is probably already installed?) and attaching, if necessary, the cable.