Endangering lives - Super Quick tyres , waterkant road

Went in on Saturday morning 20th March 2021 to plug a tyre and re-fit . The tyre was fixed but the employee fitting on my tyre failed to tighten any of the bolts . I went on a long distance trip that morning & should my husband not have been driving my car that morning, I could have met with a serious accident . My entire family was in the car . When I called the established I was told he was a new employee ...NOT ACCEPTABLE