Host telling me to cancel so he can keep the money

I booked an apartment in Barcelona for my partner and cousins. We are planing to spend a few days there. I got confirmation back from the host saying they had accepted and taken the money. I emailed them back requesting since I have paid already could I please use the two rooms with the double bed, not the sofa bed. They said they will “try” as the listing is still up for other guests. If I don’t want more guests in the house I need to pay them directly also if I don’t like it then I should cancel my reservation so they can keep the money and I should look somewhere more suitable. All I asked for in the first place was the use of two rooms with double beds. When I reminded them that all emails are recorded they said they know and since both parties aren’t happy I should cancel. They are pushing me to cancel my reservation.