检查英语语法：The shipper has not yet paid us the local chargesRMB518500 they said that will pay to us on next weekPlease let us know if your company agrees to guarantee for the shipper to surrender HBL or w

Please check the revised sentences:

"The shipper has not yet paid us the local charges: RMB:5,185.00. They said they will pay us next week.

Please let us know if your company agrees to guarantee the shipper's surrender of the HBL or if we should wait for the money to be received before arranging the surrender of the HBL. Thanks."