Trapped . . .

Woke up Saturday morning 22nd November to find that I had been barricaded in without any form of prior notice.
Not only could I not use my car, but there was no way I could physically leave my property on foot as the only egress point was the drive and this was cordoned off with heavy barriers.
I talked to several of the workmen, informing them that I needed to leave, not one of them spoke English, all they would say was ‘Rumanian’ or ‘BT’.
The company signage read ‘DLF Group’, but no search of the internet could identify them as a bone-fide company, or provide a contact telephone number. I tried to contact DCC Highways Department, but as expected, they are closed over the weekend.
Besides the extreme inconvenience of being imprisoned within my own property, how was I to know if their intentions weren’t egregious?
Why are non English speaking foreign contractors allowed to severely inconvenience property owners without having the ability to explain themselves, surely an interpreter should be a minimum requirement?
Have any other residents had dealings with this outfit?
Name and address supplied.