Lewis complaint

Still my query has not been resolved with Lewis and this time it’s draining. I spoke to the manager of Lewis stores in Kuilsriver but seems my query is long and draining she told me they too the dining set because I have not been paying for 4months which is not true and I have made payment for only 5 months ever since I was given the set. I was given the set actually in November I still have the papers. I paid deposit upfront and I was paying since then so it’s been a period of 10 months since they took the set last month in September. I only did not pay now since I have been asking them to fix the set for me as we were not able to sit on the chairs with my family hence I stopped with payment. Today I’m being told that they will refund all my money back for the 5months I’ve paid and that I’ll be clean from debt of which I do not understand. So if you have a query by Lewis this is what they do? Because I do not believe they can easily refund me back and that’s it. I know they very good at handing over people but are not able to resolve customer queries.