Delbert Services Consumer Loan Complaint

Delbert Services Consumer loan department,

Installment loan Managing the loan or lease South Carolina

In -/-/- I took a loan out with Western Sky in the amount of $2600.00. I have since paid back over $9000.00 to - different companies, Western Sky, - -, and Delbert services. I paid what I thought was my last payment in -/-/- and now I am getting calls from a company called the - stating I owe another $1600.00. They are calling me at work after asking them not to, and calling my mothers home harrassing her and telling her she is involved and going to take her to court also. They told me if I do n't pay them in 3 days they will sue me. I need advice how to handle this matter.