Refuse to pay for work done

<p>There is a lady by the name of Elize Van Der Merwe, Who came to me, reffered by one of my managers that needed assitance with promoters. She is a brand ambassodor for Extreme productions and we did the work in august already, We agreed on certain payments and all of a sudden she decided to deny everything, Luckily i have everything on email , Phone, sms and whatsapp where we discussed payments and all, Now she under paid me and my workers and never paid one of my promoters and i have been addressing this matter since September and still she refuses to pay me. She has been sending ample rude messages on whtsapp reffering to mme as a stupid and tell me shes not going to pay. Please help me get my payment for the promoters please</p>