No Communication

I went to gym last night. They refused me in and stated that Momentum cancelled my gym membership on the 31st of OCT. Totally shocked I phoned them today and they stated a premium was skipped. I asked the guy no problem, we can sort it out but why didn't Momentum phoned, sms, or emailed me so that we can sort it out? He just said that there is a lot of clients which debit orders doesn't go off and they simply cant let each of them know, they just cancel the membership straight away when it happpens. So I am not happy. I pay every month for Multiply, and now I just feel like a number that they don't care about. Also I paid my gym joining fee, must I pay it again? How can a company just leave it when a debit order failed to go through? It doesn't make sense to me. I feel this very unfair and would like an explanation and a solution!!!!