Recommendation for climate repair in Hamburg or similar??

Hi,
I'm having a problem with the climate, at the front of the cooler a pipe leaks, I don't know if it's just the seal or a hose or even the cooler.... anyway, the green Glibber is probably more or less completely out, so the system no longer cools.

The drop was already clearly visible on stage the other day, a slight rearrangement of the mother (at the front of the front passenger side) unfortunately brought nothing.

So - one must probably be able to evacuate the plant and so on, and then know how/where to fix the leak accordingly.

Question:

Does anyone know anyone here in Hamburg - e.g. Boschdienst, etc. - who does well, knows well and doesn't break more than he already is...... and still affordable? Hehehehe

Tips, reports would be great. Not that I'm still sweating soon.

Thank you and greeting,
Alex