Worse customer service, abusive towards their title

I bought 4 pairs of crocs online , I returned 2 for bigger sizes , when I did the return online they send me an incorrect shipping address and in that email it states that I must return it via a courier of my choice, unknowingly I return it via Aramex only for Aramax to inform me that they would have to return my parcel as Crocs have moved.😡after I paid shipping... Now the trouble starts cos I've been calling crocs numerous times to send the correct sizes after I returned the incorrect sizes 2 weeks ago there's no manager available at all times they promised a managers call back so many times, as to my understanding they leave @ 2pm so what are they doing this is the worst service ever, it's not the quality of the shoes I have a problem with its the service . I've never seen managers abusing their title so much as to not do their jobs ,