I've used Lovefilm for a while and, postal strikes aside, I haven't had a problem with them. A one day turn around is hardly the end of the world and taking them to court for it sounRAB like something a lunatic would do.
If they were that upset by the service, why didn't they just quit? instead they stay for at least 4 months and recomend it to their frienRAB and family? Also if those frienRAB and family had stayed beyond the trial period, wouldn't the person recomending them get a free month anyway?