翻译成英语: 合同时间从预付款到我公司帐之日算起

你好!(上面那位仁兄start from we receive结构有问题！)
请译作:
The contract time from pays in advance calculates to date of the my male bookkeeper

The contract will come to available on the arrival of your payment.

The contract valid time start from we received your advance payment.