Nimble nimbling the deaf by not responding on actual info

Am an unhappy deaf man because of this Nimble Group nimbling at me. They tell me of an amount I owe, I ask how did it rise to that amount, they fail to respond. Many e-mails been sent to them and they respond with subjects not pointing at the actual e-mail. I tried their whatsapp number and it is controlled by a robot/online machine that doesnt respond according to a human request. This is **************** and has been going on for 3yrs now and it is blocking be from getting credit as the credit bureau has been misled of this. I need a response from them now and here. The actual account is a Wonga one that is incorrect. The Mr Price one is correct because it is me who is not paying. As for Wonga I asked and am asking now...who authorised you to get off my account making the debt rise and rise???