You're lucky, I went down the same route & arrived for my appointment at ATS only to be met by a harassed employee complaining that he was left running the place on his own by a management indifferent to his stress levels & that he was on the verge of going home !
Unsurprisingly I declined the offer of an alternative appointment & took my business (both present & future) elsewhere, even though it ended up costing me £60

nb: obtained credit from Groupon for the £37.99.