A lot of weird comments here but don’t fret OP.
SS have a responsibility to follow up any and all complaints/potential safeguarding issues etc, a sort of “would rather check 100 cases to help one child in genuine need, than not and fail that one child” approach.
When my twins came home from NICU I had SS on my doorstep and boy was that a surprise, came from one concern a nurse had reported over my partner not attending NICU regularly/or for great lengths of time (if she’d bothered to ask it was partly because he worked full time, but mainly because he felt utterly useless, ashamed and terrified of the place because he felt inadequate due to our babies needs - he’s much better now!) anyway, 6pm isn’t that unusual for a SS worker, and yes they do tend make unannounced visits, this way they feel they’re getting a true window into home life.
They’re not all arseholes or bullies etc (some are - but not nearly as many as you’d think),
After dealing with them for 6 months and finally having my case closed (they stuck around mainly to offer assistance due to my living circumstances and feeling a overwhelmed with DD’s oxygen and extra care needs) I’ve got the following to advise:
Don’t worry about any issues they MAY express, you will drive yourself mad, if they do turn up and the bed frame is still stuck, explain the situation to them, even IF they mention this as a safety hazard, all they will want to see is that you are able to rectify the issue within a reasonable time frame (I.e when you’re better, have more help etc).
So long as your house isn’t dirty in a gross, obviously uncared for way, they don’t expect homes to be pristine. The only concern the SS had for my living situation was that we were (and still are) in a one bedroom flat and had been inundated with so many things for the twins that the living room and bedroom had been severely cluttered. The concern that something may fall on one or both twins. We tidied up and voila, no more safeguarding concern there.
I could say more but there are too many examples. I hated having the SS in my home, even when they were being friendly, because it hit me hard that there was a chance they would think I was in some way inadequate and that I had already failed as a parent before I’d really had a chance to begin, but after time I realised I was being far too defensive because of the stigma attached to the SS.
It’s not nice to feel judged and it may come across that way from them at first, but keep a calm front, be honest and friendly as you know you have nothing to hide, sorry your DC has said something that has bounced back this way (and bless him he probably didn’t know what he was saying/or at least the impact of what was said)