Do debt collectors have to provide written documentation that you requested card?

Answer 1

No, not at all. If you are looking for a technical way to get out of a debt, forget about it. To all who read this.....do not try to "get over" on a bank or insurance company. Trust me they have seen it all, and they have smart people who make sure there are no loopholes.
If it is not your account, get an attorney and file a police report.