DCSS sent me a letter that my case was terminated I relied on that and now I owe arrears. Is this detrimental reliance?

Were you paying child support, during those 14 months by some means other than through DCSS? If not, then you still owe the support, whether or not DCSS was enforcing it or not. Do you believe that your child stopped eating during those 14 months?

Was your child 18 years old and graduated from high school when DCSS sent you the letter that your support case was terminated? We're you paying child support directly to other parent during the 14 months that you didn't pay child support? Did you think your child didn't need support during that 14 month period of time? Was your child still a minor when you received the DCSS, letter that your support case was terminated? If your child was still a minor child when you got the letter from DCSS that your support case was terminated, you are still responsible for the child support. Why did you rely on the DCSS. Termination of support letter? Did you think the DCSS, letter might have been a mistake? There's insufficient facts for a proper assessment.