Hello Andrew,
Sorry to see you have had issues fitting your film.
It's common to see small bubbles under freshly-installed film. Normally, these bubbles should go away within a couple of weeks.
If they are still remaining, then you can adequately heat the film, then reuse the spray bottle to apply a fine mist of water to the window tint. The cold water interacting with the hot window will loosen the adhesive, making it easier to get the air bubbles out.
You are more than welcome to call the office, so we can talk this through with you on 01162784844 as we are always here to help and assist.
Kind regards,
Liza