Contract renewal turned our life upside down

I had a deeply disappointing experience with this rental arrangement. As our lease was nearing its end, the owner decided to sell, and we were obligated by the contract to make the house available for viewings—two Sundays a month, between 2 and 5 p.m.—three months before the lease ended. Despite this, the agent insisted we should have been available six months in advance. When we explained that we simply couldn't due to work and personal commitments, we were met with a threatening email. The agent stated that he would advise the owner to terminate our lease immediately, rather than renew, simply because we couldn’t meet his arbitrary timeline. This was incredibly unprofessional and unfair. I would not recommend this agent or the process at all.