No refunds and cannot assist with accommodation!!

We booked with Alkmaar Farmstay Nelspruit in March for Innibos, they pushed us to pay deposits and the lockdown came. Dates changed for Innibos to December and I contacted Wanda immediately and asked her about the changed dates on the 2nd of May 2020. I informed her that we cannot attend Innibos in December as we already have other responsibilities and issues with leave etc. She told me that she cannot pay our deposits back- however their terms state that deposits are refunded if notice of cancellation is given one month prior to booking. I then agreed that we could change dates of accommodation. Wanda informed me that they are fully booked in November with weddings and cannot assist us for a weekend. And still refuses to refund deposit but they cannot assist us with accommodation either??? You are fully booked ? And cannot help us with accommodation but also say that you cannot afford to pay us back? You are *****ing peoples money!