Yup, been there. Sucks man, coz you can't be angry at them. I went away to visit my parents and when I came back I had lost two Clown Loaches and a beautiful Fire Eel to Ich. I expalined to my friend how to look after the fish, but you can't trust anyone but yourself when it comes to your fish. I was not impressed... Still struggling to find a decent Fire Eel, but a lot of the pet stores in South Africa don't stock them or they don't look healthy in the store. Drives me crazy!! 
