Hi,
I am living in an apartment on Sublease in Frankfurt. The sub lease was signed from April until November 2019. My sub lessor told me that he has taken agreement from the landlord to lease the apartment. 
Now as the sub lease is expiring, he is asking me to vacate in November 2019. But i have requested him to extend the lease and forward my request of extension to landlord. 
They mentioned that they do not want to extend the lease with me but putting the same apartment on rent on immobilienscout. I have the copy of advertisement.
Another point :
Sub lease to me was given for 1280 Eur per month (furnished)
But 
now the current advertisement shows that the rent is approximately 800 Eur per month only. 
Can I request the extension for my current sub lease or a new lease and stay at this place?
Is there any claim I can make to the sub lessor for the payments made in the past?
Thanks,