AFGA colletions needs a payment of 500.00 and in 6 days 300.00 more to close out a debt I got behind bacause the IHSS medical was behind in paying me for sercives I had preformed since Jan 24th of this year I am a IHSS worker I had agreed in the beginning to pay 589.00 a month now because of a thief one debit cards and credit cards someone in the office was arrested they want me to to send a money order my question if I tried to tell Richard that I could only do 500.00 for now he  said I had agreed to pay 589.00 and accounting dept wont let him go beyoud the 26th of April so they can close out the account. What can I do legally

AFGA collections needs a payment of 500.00 dollars and in 6 days needs 300.00 more to close out a debt I got behind behind because the IHSS medical was behind in paying me for services I had preformed since Jan 24th of this year I am a IHSS worker I had in the beginning agreed to pay 589.00 a month now because of a thief on the debit and credit cards someone was arrested they wantme to send a money order. my question is I tried to tell Richard that I could only do 500.00 for now he said I had agreed to pay 589.00 and the accounting dept wont let him go beyond the 26th of April so they can close out the account. What can I do Legally.