Reputable companies that offer cooking and cleaning for 83 year old father.

Depending on what State you are in.....call your local Department of Aging. They can give you information on everything!! Also, Meals on Wheels is out there and will deliver to the elderly for a donation. Call your County Dept of Aging, they should be ready and willing to help!!

Google house cleaning and "elder services" in your area, read penny saver ads,
get referrals from local Senior Center, etc. Ask your Father's neighbors. Some caregivers may do cooking and cleaning as well. Screen Carefully, bonded is best. Good luck.