By Lauren Haughey Applying for jobs is stressful at the best of times – so when you get an instant rejection it can be disheartening. From polishing up your CV, to spell-checking a cover letter – it’s so easy to overthink practically everything. But one applicant claims this was taken to another level, after they had been rejected from a position just three minutes after sending an email. Taking to Reddit, the frustrated candidate said they ‘spent hours writing’ the cover letter for a job at the National Grid, only to be ‘automatically rejected by a bot’. “I love the current job market in the …