Hi Crystal, as far as I understand it, water treatments do not 'kill' chlorine and chloramine but convert them into a different chemical form that makes it safe to add to an aquarium. What brands have you tried that do not seem to be working?
an ammonia reading in your tank suggests that your tank is not yet cycled. Do you think the bacteria yould have been killed by chlorine in your water changes? are you sure your water company has not added something to the water recently?
jenny124, you say you have added water with chloring in to your tank. Chlorine is added to water to kill bacteria in the same way that it is used in a swimming pool. The fact that chlorine kills bacteria means it should never be put into a fish tank as all of the bacteria that turn your fish's waste into nitrite, and nitrate will be killed by the chlorine. Once the bacteria is dead there will be nothing to process the waste untill a new colony grows and your tank is 'cycled' again. This means your fish will be swimming around in ammonia until a new bacteria colony can develop.
ammonia is very poisonous to fish, so it is this rather than the harm caused to the fish by the chlorine itsself that I would be worried about...