Charged an unresonable amount for my ads

<p>I have a digital marketing company called DigitalEye and everytime I do ads for my clients Facebooks charges me and sends me a receipt for my ads...I have never spent more then R60 on an ad and last week they sent me that I owe R606..I am very worried about how they are charging and worse when you complain you don't know who to speak to please sort this out IMM.....</p>