Should the vet have been more thorough?

My cat is missing and someone called me thinking it was her. It wasn't but the cat was flearidden with ticks and matted hair. she was also incredibly bony and clearly in need of help. I took her to the vet hoping they could provide me with some answers and this is what happened. We went into the consulting room where the vet who wasn't particularly friendly prodded and poked her for a bit. she scanned her (which is free in UK) to see if chipped but she wasnt. Really what I wanted was to be able to bring her from the outhouse into the house that night. Id frontlined her but it was really really bad. They huddled together outside for ten minutes and then said they couldnt sort her fur unless I pay 200 quid for loads of tests as they reckon shed need to be put under anasthetic. It would take a week or so before they could treat her. shes a gentle cat, I reckon they could have done it without all that, and she has no symptoms of fiv, feline leukemia or renal failure.I've been managing slowly to sort her fur it's just now the outhouse is probably covered in fleas :( They seemed uncaring and couldnt tell me whether she was neutered or how old she was, and they poked her so hard she yelled in pain at one point. All in all I didnt get much from it, and they used no equipment or meds. I was nearly in tears when they told me about the 200 quid, they could see I was upset. I take both my cats there and have spent a fortune in the past. I left and stood outside to collect myself. One of them ran out and I thought she was going to give me some helpful advice but she ran out to tell them I owe them 25 quid for the "consultation". All in all I feel let down. If My Ruby was found I'd want the owner to be given helpful advice. Ruby is chipped but sometimes it can take up to a minute to find a chip. she took about 5 seconds. Am I right to feel a bit mad?