I sent cancelation forms of the 4th of Feb with all paperwork required, bank details, ID numbers and forms, every time i call to enquire about my funds they keep asking for documents i habe already submitted, they don't scroll the attachment when the open

I sent cancelation forms of the 4th of Feb with all paperwork required, bank details, ID numbers and forms, every time i call to enquire about my funds they keep asking for documents i habe already submitted, they don't scroll the attachment when the open, last week friday they wanted ID copy today its the Bank details. Mid last week when i called i was told they need my bank details and my ID copy which i did. But still everyday they require ava document.