@cmsdengl @steko @janvlug @noybeu The desirable outcomes of this discussion with Meta are :
1) get clear confirmation that they have registered your objection
2) get clear refusal to comply to GDPR so that you can file a complaint at the GDPR authorities
3) have back and forth discussion that will be interpreted by GDPR authorities as a case 2)

Ignore their questions and quote the relevant GDPR principles back at them might indeed result in case 3)