That doc is fake.
The font changes halfway through 9/17 and then changes back.
The “of” in Date of Invoice is a different font. “Telephone” is in a different font from “number” in “Telephone number”. “service User”—service not capitalized.
The monospaced, sans serif font is original to the document. It looks smeared and distorted like it’s been photocopied.
The serif font was added later by computer. It’s kerned, not monospaced, and it’s crisp and clean with no evidence of being photocopied.
Someone took a real call log and doctored it up in Photoshop or something. Badly.