Bad service, no response

It is my first time placing an order with Spree and I am not impressed at all, I placed order an on the 28th of November and I realized I ordered a bigger size, Monday the 4th I tried calling Spree to see what options do I have to change the size to 3, No one was answering the phones, it is an automated machine saying they are experiencing high call volume, I tried Tuesday, Wednesday , Thursday, send an email to both sales and support and it seems like there is just no one working there but the machines, I understand the high call volumes but really 4 days and no one is bodering to come back to me, now they delivered the size 4 , I now have to go through their return process something that I was trying to avoid from the start. I am so annoyed with lack of service.