BAD SERVICE , FAILING TO RECEIVE MY REFUND FROM ZANDO

I bought shoes with Zando for my sister which i later returned for a refund as the shoe did not fit her . It was in February when i requested the refund . I called to request the refund which we agreed upon . The shoes were collected from on the 21 of February BUT TILL THIS DAY I HAVEN'T RECEIVED MY REFUND. I do not know ANYMORE how should i reach out to Zando. I have sent so many emails to them which MOST haven't been responded to. Their lines due to Covid-19 are not taken, How many years does it take for Zando's refunds to customers ? it looks like i will have grandchildren before I'm refunded OR I WILL NEVER BE REFUNDED. WHAT IS SO DIFFICULT IN REFUNDING YOUR CUSTOMERS ? ARE WE ONLY IMPORTANT OR TAKEN SERIOUSLY WHEN WE PURCHASE YOUR MERCHANDISE NOT WHEN WE RETURN THEM ???????????????????????????????????? What kind of service is this ?? I called in before the lock down to find out how far are they with the refund , they are busy with it, someone will give me a call. IS THAT SOMEONE WHO SHOULD CALL ME STILL MANUFACTURE OR WHAT ? They have my email address , my contact number BUT YET HEARD FROM THEM ... CAN SOMEONE PLEASE TELL ME WHEN OR HOW WILL I BE RECEIVING MY REFUND .... I'M SICK AND TIRED OF SENDING ZANDO EMAIL BECAUSE THEY ARE NOT ATTEND TO.