Worst service ever

This by far is the worst service I had ever received. I have returned shoes on the 6th.12.2024 for an exchange of size. It took you guys 3 weeks before you can collect the shoes at post net. I have been following up every day and the best response I get is we waiting for response from the internal team everyday. You don't have a direct line and when I phone the 081 number it rings and hangs up.its 2 days before Christmas and I'm so frustrated that my son won't have shoes for the day. I'm so disappointed and not.can you attend to this please.