There are different solutions depending on the size of the hole in the wall - small holes can be patched with painter's putty, while medium sized holes require a drywall metal patch and larger holes require patches made of drywall.
I own an old house, and the problems just seem to be endless. I called Andy at my wits end with a leaky roof, and a laundry list of other semi-urgent small jobs.
Andy showed up the same day, and...
Andy was prompt, paid attention to detail, made useful suggestions and completed the job in a timely manner. He also fixed a small problem beyond the scope of the project at no additional cost.