All wastewater pipes in the floor slab are incorrect.

We are fulfilling our dream house and it is currently developing very negatively - I am really desperate!
Our foundation slab was poured last week - the construction manager even welcomed the craftsmen in the morning for it. When the tarp was removed days later, we saw that all the! pipes were installed incorrectly. The multi-utility house entrance was also wrong. It was as if they had rotated the floor plan 90 degrees to the left. Although the construction manager reacted immediately and came on Monday... his statements made us suspicious... it wouldn't be a big deal... they will be covered with concrete and we will do core drilling???
Now our question: is it possible to properly install all pipes afterwards? What solution do we have to accept? Can we insist on a new slab? Trust is already very shaken, moreover they delivered us facing bricks that look as if they had been painted with nail polish and well... some are already chipped so that the red tone is visible (our house is supposed to be faced with dark bricks) - his argument... you don't see that on the wall, they don't absorb that much water :( our house will cost about €300,000... I am sad that we have been fobbed off like this so far...

Who is supervising the construction for you?

This can become an endless story, therefore:
Get an expert on your side.

They can then say something about the sealing etc.
We here in the forum can only guess whether you have, for example, a WU slab, what the local utilities say about core drilling, whether insulation under the slab is problematic, whether the clinker only has occasional chips, etc....

The clinker is partly used as a half brick, so some damage doesn’t matter, the stone is then cut accordingly, for example.
Who chose the stone?

That's how it must have been. Plan read/held upside down. Core drilling can be the solution if carried out professionally.

And in the future, bring in an independent expert to inspect the construction at important milestones. My foundation slab was also poured last week, and I had my expert on site two days earlier. For example, I had a sewage pipe that was only 1.38m from the exterior wall instead of 1.5m. This was noticed before the concrete was poured, so theoretically it could still have been fixed, but in my case it was still okay, as it deviated in one direction where it was really not critical. But if there had been more deviations or more critical ones, they would have had to address it again. Then, the concreting would probably have been postponed to the next year, which would have really upset my construction manager, but it wouldn’t have helped. So I can only recommend consulting a professional. They also know at which construction phases an inspection makes the most sense.

Hi, yes, but the lines underneath also have to be laid or adjusted differently somehow, does all that really work professionally like that? Regards Olli

And in the future, involve an independent expert who inspects the construction at important milestones.

That doesn’t always help. We had that with the last construction in 2014 as well. The shell builders simply rotated the house by 90 degrees and dug the strip foundations accordingly. The expert didn’t notice, but my ex-wife did. That was the point when we immediately fired him and took over the construction management ourselves :p. But it was just a bit of digging since the slab was only poured a few days later. Once the slab is in place, core drilling becomes difficult. It depends on their location. If strip foundations exist or drains are also in the middle of the house, demolition and rebuilding might make more sense.