Dispute with Kennis Caravans and Motorhomes

I let my caravan go on consignment to Kennis caravans and motor homes I had 2 choices at the time November 2018 I could sell it to the distributor for R125000 or they would take it on consignment and sell it for me, and I would receive R150000 when it was sold. The caravan was sold in April. I noticed that it was not on their website anymore so I contacted them and they said they had sold it and would send me the money R125000 I told them I would not accept this as I could have sold it to them for that price in November. According to their General Manager we had a verbal agreement on the 22/04/019 for this price (R125000). As a sale was pending on this date I certainly did not verbally agree. I have a copy of the agreement which was printed for me on the 22/04/019.When i contacted the General Manager Jan du Plessis he told me that his business was very slow but that is not my problem I need my money I am a pensioner