Telekom Move New Construction Costs + 300€ Credit

If you know so much better, then why are you asking?

because I have never done it before.
And I am asking about practical experiences.
Maybe there is something to keep in mind.
In the Telekom forum, someone complained because it didn't work right away.

I applied for them and Telekom quoted €799

Then everything fits. If you apply for or have your Magenta something connection transferred, you will receive a credit of €300, which will be offset against your next telephone bills.

Then everything fits. If you apply for or have your Magenta whatever connection changed, you will receive a credit of €300, which will be offset against your next telephone bills.

That's exactly how it is. You do not receive the €300 in cash but it will be offset against the subsequent bills from Telekom (your monthly telephone bills).