Spam? - Finding tenants using Facebook

[Celebra Queen]

Hi, I would like to ask for help to understand if somebody had the same problem with posting a room for rent using Facebook. The problem is that a few newly created FB users sent the same messages for room rental posting that my friend posted on FB. These users did not have any info at the FB pages except their names and they were new FB users. It was about 4-5 of such new users who sent their requests for the phone number. Below is their correspondence:

"Helen

Is this listing still available?

You sent

Yes, would you like to schedule a showing appointment?

Helen

ok i am interestead, can i call you?

You sent

yes, what is your phone number please?

Helen

Please give me cell phone number

You sent

XXX-XXX-XXXX

Helen

Thanks, I will send you a confirmation code to make sure this post is real

Helen

Can i send the code?

Helen

Yes or no

You sent

this post is real. Please do not send any confirmation or any other codes, as there are a lot of spam and I just block everyone who is spamming my phone. OK? Just call. Thank you"

Please let me know if you have any idea about who these people are and what they want. It looks like they had no interest in room rental but had some other plans. 

Thank you so much for your help!