i was billed an amount i do not understand

when I signed up for Rain running i was excited, by my excitement was short lived, as i was billed an amount i do not understand. they have this horrible line of communication of only using email. no calling them. i sent the stupid email to them till this day no response. it is so disappointing i was under the impression their service was good i was wrong. if they behave like this to their new current clients they should be careful of the word of mouth because we will not have positive things to say.