Wadi Dogs

I'm sure the majority of people are having the same problem, so someone must have an idea of what can be done...
I have an entire pack (at least) of dogs living in my area. Initially there was one female and 6 puppies. As soon as the puppies were big a male dog started hanging around her, so I assume she's going to be having another litter again soon. Now somehow loads of other dogs have joined in the gang.
They're becoming a huge problem for the people - its not very nice to go walking and they are loudly fighting ALL night and day!
I feel sorry for the dogs too, there are loads of really cute puppies and summer is coming up so I don't know how they'll suffer.
Someone told me if I took a dog to the vets they would sterilize it, but how am I supposed to get it there?!
Does anyone know anyone or anywhere that helps these dogs?