Cannot understand delay with my refund of R1200.00

I purchased a voucher on 2nd September from Groupon. Within my 7 days cancellation period, I cancelled the voucher and asked for a refund. <br> <br> From date of purchase I made contact with the merchant (Virgaderm) to schedule an appointment but I did not confirm or accept the appointment. When I logged into my Groupon account I saw that the voucher was redeemed. I contacted the merchant and asked them for a cancellation email and they explained it was a misunderstanding on their part, they sent the cancellation email to me and I sent it to Groupon. I contacted Groupon on 7th September asking them for a refund I was told that the situation is complicated and they will get back to me. On Friday, 11th September, the merchant contacted me to schedule an appointment. I told her again over the phone that I cancelled, and asked for a refund. Still waiting for Groupon to refund me my money. The merchant ***ner - Steven) called me back to tell me that they notified Groupon to refund me my money. I cannot understand why the unnecessary delays to get my money back.