A company is having problems with their customer service department, more then 20% of their contain billing errors, invoices are being late (4-7 weeks) as well after services are being rendered

A company is having problems with their customer service department, more then 20% of their contain billing errors, invoices are being late (4-7 weeks) as well after services are being rendered. Handling these problems takes up a lot of time and effort, plus late billing, late revenue collection.Questions:How do you IMPLEMENT and MONITOR solutions for this problem?

(a) What implementations do you make?

(b) How do you monitor the progress of this issue?

(c) How do you study the effectiveness?

(d) How do you standardize the solution

(e) How do you plan for the future