Taking to long

JD group ticket number MO-PA-***. It has been a year now since I complaint about damage goods delivered to my house. I paid cash for the goods and JD group could not assist me or rectify what they have done in that year. I complaint and the above mentioned call is escalated to various department awaiting approval, but it is almost two months and my problem is not resolved yet. If I bought this on terms and I missed a payment or two JD group will immediately hand me over to their collections department and influence my credit record, but what can I now do as a consumer. Could you please resolve the matter ASAP, as JD group was all so happy to take my money when I bought the goods from them.