False promises

They overcharged me for an overseas delivery and admitted their mistake. Now to try and get the refund over the phone is proving impossible. Firstly it takes an average of 15 min to get hold of a human. When and if I succeed to speak to either Junior, Langton or Clinton, they all make promises which they ignore. They never return calls so don't bother leaving messages. They all need to attend customer relation training at all levels. Totally useless company and sad that I have to drive their to resolve this. Fortunately we can choose to go elsewhere in future.