Maria hill toll plaza

Maria hill toll plaza.in January I drove pass Mariano hill toll plaza I had an issue with my etag on shesha lane where I went in and it beep but did not open the boom I had to reverse and start again I was charged twice.this weekend it happened again where I had to reverse 3 times it's kept beeping but the boom will not open.until the attendant came and help me to go through,and yet I will be charged for their fault.