Can a payday loan company garnish my wages? Also are they allowed to call my work and speak to other employees and tell them that I commited Fraud?

I DID NOT COMMIT FRAUD. I just had something bad happen and wasn’t able to pay them. But they are telling other people that stuff then calling and yelling at me. took this loan for 200$ out over a year ago then I was hospitalized for several weeks and Dx with MS because of how long I was out of work I was unable to pay it back right away. Oh I am also a single mother who does not get support from any person or government. I work for my money. I just do not make enough so I always had to put that last and they were unwilling to make payment arrangements that I could afford. So now they are calling me names and threating me and telling my co-workers that they better tell them were I am. Because I commited Fraud.