UPS is one of the leading private courier services operating across the USA, so you must know if is it possible To Complain About UPS Driver? Since UPS operates across such a wide geographical area delivering lakhs of parcels daily across the world, it has an independent customer-care team dedicated to resolving all the customer complaints and handling their queries and issues.
So to answer your question, you can lodge a complaint against a UPS driver for any reason, be it for unprofessional service or misbehaviour. You just have to dial their customer care helpline, i.e., 1-800 and a customer care executive will get in touch with you. You can register your complaints with them and they will try to resolve it as soon as soon as possible.