How can you help ME

So i paid up my credit card in full over a week ago. Then called the contact centre to request a paid up letter they gave me an email address that i should forward my details to so this was done on the 21 march 2018. Received an automated email acknowledging my request and that the turn around time would be 48hrs. Called up ********** 000 was then transferred to card collections saying they only deal with paid up letters. so the consultant says it takes 5days and that its done by the admin department. I asked to be transferred to them to follow up. The consultant tells me there is no number for them and they only work with email. So i say what do now cause i need this like yesterday she jus has a moment of silence then ends the call. REALLY LOW CUSTOMER SERVICE