I made the mistake of buying the wrong sub box for my truck, that was on me that was my fault. I quickly sent them an email stating I would like to cancel my order. They replied saying my order has been canceled and I would have to wait 3 to 5 days for my refund to get back to my account. Later that day I received another email stating that my order has been shipped. I then replied back to the email I originally sent them for canceling the order and told them that the order has been shipped after I had already canceled my order. They later refunded me after charging me $18 for an interception fee the cost of the item, but not shipping which was somewhere around $90 to $100. I highly recommend staying away from HiFi Sound connections. Absolute scammers. They have no problem taking your money.