Anyone know about vehicles..fixing them ...

I had front brakes done..pads and rotors on front...both sides..I wanna say a month ago...well they did tell me I I'll need back done as well...well the past few weeks I have this jingling sound.. like somethin is loose sound and yeah I can tell brakes r needing done...
Had someone look at them for me but they took off front driver tire and shows me he caliper was loose.and whoever put the brakes and rotors on didn't put that on correctly and from what they said the jingling or rattling noise is from a pinch hose or hole in a hose something sounds like having to do with the brakes...does this make sense or can anyone make sense out of this? I can't call the guy who did it so he can fix the issue he may have not done properly not really knowing how to say or what to say and can't get an answer from the guy who told me this ...needs fixed and if it's no extra money out of my pocket that I dobt have then will help me.anyone know what I am trying to explain? To help me along here... Lololol