No support service

Good day, I have bought a pair if boots for my daughter size 7, it arrived, she fitted it on, but it was off size, thus too small. I requested a return, but I receuved no reply with a return waybill to attach. The courier came to pick up the item and just gave me a copy of a slip with no date. I waited for 3 days but no communication came from Spree's customer support services. I then logged a complaint on the 6th of September, and only received an automated receipt email with the reference number 790042. I have sent a complaint back via that email with the reference number yesterday. I have still not received feedback. I have purchased many items from spree to date and never had a problem with their service before, but I am highly unlikely to order in the future if this is how I am treated.