Do it yourself. Rent a jack hammer to open the crack up a bit then fill with water activated epoxy.
It hardens even more when water hits it. If there's not water coming in, hairline cracks in a basement are pretty common and not something to worry about.
This message has been modified
Originally posted on Oct 22, 2020 at 9:41:49pm
Message modified by Soupie on Oct 23, 2020 at 8:20:40am