Disgusting After Service

i am completely disgusted by the service i received from Makro Bedworthpark. I bought a stomach belt yesterday which said 32 - 34 size but was too small for my partner which she didnt even wear it as we could see it was small. I returned first thing this morning and the tellers nor their superior was not even bothered to even hear me out. After assuring them several times that the item was not worn i was just pushed off and told we can't help you with such attitute like i was wasting their time. I have been a loyal client to this Makro but if this is their after service i am done. My appliance are all from Makro which if this is the service i will get when having a problem, then it is the last item i am buying here. Completely disgusted!!!