Uncollected goods

I initially made an online order on the Zando website as I had seen two boots I liked... I placed the order on the 04th of May 2020,the goods where delivered on the 16th of May 2020. I understood the delivery being made late as it was due to lockdown. The shoes did not fit immediately on arrival, I the logged for return the very same day. I ws advised it will take 5 business days fir the parcel to be collected from house. I received an sms to say a delivery guy by the name of Mpho ndlovu from Dawn Wing would collect my parcel from home on the 21st May 2020.The parcel has since not been collected since... I am now sitting with shoes I cannot wear and have not been refunded... Very frustrated with the poor service I have received from Zando, especially being a client with for so ma years this is the 1st worst experience I have had... I need this resolved urgently order number :***.