What is the best way to follow up for collection from Sales Team ?

Good Explanation, But the problem is the same. As you are a sales person, you applied all your marketing skill to answer my question, but if you read again you will find nothing related to my question. But you satisfy the accounts people. 

Good question. As known that the principle in the sales activities consisting of a team to develop the sales process as well as pursuing new opportunities. Some collections are established to following-up different projects and various sales opportunities and all of them / teams have to co-operate and work together  consistently to reach their goals.

As example project execution team is working together jointly to implement the project efficiently as per the specific time schedule. Any good & successful achievements in the project execution will serve the main Goal for other team in the sales process to reach the target budget as planned. This means any success in the execution and following-up any issue will help and support other team purpose and aims.

Then the working in a team has to be considered in all activities, Marketing, Sales & Project execution process as well  as in after sales services. Each part will complete other to realize the best results.