VERY BAD SERVICE!!!!

I did an online purchase after which I decided to cancel immediately, I also sent them numerous emails asking them to cancel my order there has been no response from them, 3 days later an email comes through stating they cannot cancel my order as it has been processed (ignoring all the email requests prior to processing the order to cancel the order) then the lady goes on to say that my package should have been delivered did i not receive it? I did not get any shipment or tracking information to say my package is on the way. This business is very unprofessional and I will never purchase from them ever again and I definitely will not recommend them to anyone either!!!