Unable to produce statement

Vericred claim I owe an amount and a Nomsa called me.They are unable to provide proof of what I am owing.I know I am owing but the amount given seems incorrect. They threatened me that they will charge me per attempt to email me a statement. Nomsa said she emailed me a statement but none was received. I am most certainly not paying twice to be emailed.the amount owing suddenly jumped by over a 100 rand after Nomsa called..I received an sms. This indicates I was unfairly charged for the interaction with Nomsa and what makes it worse is still no statement. I need to verify what I am owing! Wakeup Vericred! I am not paying you extra for *********** calm centre agents working for you!