in the end

I turn down the offer.

私は提案を断ります

They asked me many times, but I turn down the offer.

私は何度も頼まれましたが提案を断ります

They asked me many times, but in the end I turn down the offer.

私は何度も頼まれましたがとうとう提案を断ります

They asked me many times, but in the end I turn down the company's offer.

私は何度も頼まれましたがとうとう会社の提案を断ります

They asked me many times, but in the end I turn down the company's unreasonable offer.

私は何度も頼まれましたがとうとう会社の無理な提案を断ります