Restriction to pickup men from my Cloud kitchen.

Me & my run a cloud kitchen from our 6th floor house.The secretary has instructed the security personnel not to allow any pickup guys to my house to pick up the food saying they create nuisance and peep into others house and sit on the stairs waiting for the food to be ready.I have requested that the pickup guys will wait at the security cabin n only come to pick up the food when it's ready...but still they don't allow n have threatened the security personnel that they will be responsible for any incident if they allow the pickup guys.I want to know can anyone stop anyone from coming to my house.I am facing a lot hardship due to their unjustified decision.Also ,those who have bought car parking slot from the builder are paying minimum amount as compared to those who are parking their vehicle in society premises...also our's is a 1BHK house but we are paying the same water charges as those of 2BHK &3BHK.I would like to know whether it is right and justified.They gang up and bully if anyone raises these issues.Could you please help me as I m stressed out mentally due to their behaviour.