Illegally erected gate that is at dead end and touching to my property

I have a house in a small layout that has total 26 houses, the layout was fenced from all sides with a gate on front. My house is last in the layout and there was no road beyond my house but owner of the back side property got the layout fenced removed and extended the road to his property and constructed a building on original approach road of his property. Now he has constructed an apartment building on the property that covered 10 feet of the road beyond my house. He has two gates for the building, one perpendicular but touching to my house and another one on extended 20 fts wide road , road in front of my house is 30 fts. I objected when they erected the gate touching my building as my visitors used to park their vehicles in front of my house. They stated that it would be only emergency gate and normally not opened as their main gate is other side of their building so I allowed them. Now instead of using their main gate they want to use this gate that is touching and perpendicular to my building and don’t let my visitors or me park vehicles in front of my house as it blocks their second gate. Let me know what should I do? Who has right on road? they are using gates on both side of their building and blocking my road. Everyone in the layout has some right on road in front of their house- atleast their visitors can park vehicle but for my visitors there is no place to park vehicles. Let me know what action I can take. Thanks.