In June we rented a holiday home for November thro...

In June we rented a holiday home for November through TUI-Wolters-Reisen in Bremen. Due to the Corona-VO, the trip could not be started. Although I expressly requested a refund of the rental price that had already been paid in full, I was only sent a credit note that I can redeem by December 31, 2021 (!!!).
There was no reaction to my emails to TUI / Wolters-Reisen that it was finally legally required to reimburse the travel price in full within 14 days of the travel cancellation. I've been waiting for the money since the beginning of November. There remains only the way to the lawyer. I can therefore strongly advise against booking a holiday home through TUI-Wolters. They are very dubious landlords / agents who do not answer emails and behave illegally.