This is not possible. Card schemes require you to submit evidence as either a JPEG or PDF file. If you have an audio recording that supports your claim, we recommend transcribing its contents in order to submit that as evidence.
In addition, you cannot submit video files, links to third-party websites (a screenshot may be submitted if relevant), or file downloads. The issuer will not accept these as evidence. You also cannot ask for the card issuer to contact you for more information.