Shocking Customer Service.

Disgusting customer service and dishonesty. They were quick to take my money, NOT send a final Invoice but request payment on a pro forma invoice , and now refuse to refund me. No original invoice was issued to me, and they say it was with the items delivered, but was not there.. The Manager has no peoples or communication skills and insinuated that I was being dishonest about having an Invoice. Why would I do that if I am wanting my money back????? He has a copy of the original invoice, yet none was emailed to me and goods were falsely advertised as well. What shown on website is not what was received.!!!!!