Unhappy customer

i am very close to close my selling account. the unintelligent staffs that does not speak english. i had been on the phone days and still not getting anywhere. i had ship variation and all of the products were listed under one ASIN by FBA staffs. i had sent emails email emails and and not getting anywhere. millions staffs dealing with my CASE, trillions CASE number. if not sorted by the end of the week i will have no other alternative but to request removal of my products