Wizzdumm Headley

Well, there are some very serious plot issues with the film, the first being that the main protagonist/original tells the "tether" they/she were "clones" without a soul???!!! WHAT???!!! She also said that she was chosen to go to the surface so that the others could rise as well yet she was the original that was taken in the beginning, which was revealed early in the film. So the issue here is; that if the originals are clones & the people underground are clones as well, what was the point in having one group of clones murdering & replacing the other? Also did the people/clones underground shop at the same places the ones on the surface did? Where & what did those underground eat as they looked/seemed very healthy?