Worse service ever

MTN handed over my account to Saya recoveries worst company ever ,and I have been calling MTN to request my actual bill so o I can setting the account even today now I am over R500 monthly and R100 daily by this company for sms and calls plus Another R199 for emails that ain’t even receiving and I have asked them to stop calling me everyday ,MTN can you please send me a copy of a contract that state should I not pay my account will he handed over without you letting me know my my information was shared without my consent?please send me what I owe MTN will pay directly to you ..