英语翻译我公司于3月16日寄信给贵方,信中提及贵方仍有当于12月份结清的款项仍未支付,共计105.67英镑,然而至今尚未

My company in March 16th to send to you, you still have the letter mentioned when cleared in December are not yet paid, total 105.67 pounds, but has yet to receive your reply, I shall feel very disappointed.
Today, my last request payment requirements, we hope that you will not let me no matter has been transferred to the company.
We decide to give you 7 days duration, hope your company to be able to pay the remaining amount or at least to our interpretation, otherwise we will take the action.