Poor Service

My Ford Ranger was there for a 75000km service on the 11th February 2023, and the service advisor was Anna Tenner. When collecting my car in the afternoon I've ask for the copy of the invoice so that I'll see what was done to my Bakkie and she promise to email it to me. Then I've ask her why I'm not signing anything because usually I'll get invoice to sign and explanations of what was done to my car. She just told me it was a minor service. A week later I receive a call from Ford head office to rate the service and I've told them that I'm still waiting for the email with the invoice as I don't know what was done to my Ranger. After the first call I've received another 3 or 4 calls from Ford Head Office as a follow-up checking if Ford The Glen contacted me but still today no email and phone call from Anna. My car was just there for a wash only not serviced since they can't give me a copy of the invoice. I'll never take my car to Ford The Glen again.