Security aggressive towards families dropping off items. How do u get new clothes

Total change of rules. Can no longer gave visitors. The security did not even want my dad to come till RECEPTION. Threatening and treating a 69 year old pensioner to give a doctors letter. The man at reception said he will throw me and my father out who do we think we are. No induction was done yet. I am supposed to study now they threatened him if he comes back they will show him. I am not allowed to fetch my laptop either. Whats the use cos im more stressed. By the way the receptionist guy said he is the manager and no one will tell him.