Problem w/ FACEBOOK Marketplace; Is there a FB help #, chat, email?

For years I have used FB Marketplace on occasion with no issues. I have been helping a friend who lost her car in an accident to replace her car. At first no issues. The last 2 weeks I consistently am unable to respond to ads and get the following: “Query Error. Error performing query.” I hit OK button & get: “Something went wrong. An error occurred while sending your message. Please try sending again later.” I get this now every time I ask about a listing.
Appreciate any help, ideas. Thanks.

UPDATE, problem solved. - Today Facebook appears to have corrected the problem. Thank you Facebook! I had previously sent a problem notification with no results. I sent another PN today with positive results.