EXCHANGE NEEDED - TERRIBLE SERVICE

Terrible customer service, I accidentally ordered the wrong size and I admit it was my mistake. I just want to fix it but there is no customer service. I have send 5 emails. They are supposed to contact you in 48h and I have received nothing. I called them two weeks ago every day and although the reseption lady is friendly she just kept saying someone will call me. Well I am still waiting. How hard must it be to cancel a order, I was even happy to just replace it with the right size. I know it is lockdown but then they must give out a statement that we will have problems getting hold of customer service or something. I was a loyal customer of Crocs but this is bad and I would defintely not recommend them. I tried calling this morning and there is no answer. I am not one to complain on Hellopeter but this is terrible service