Avoid Musica. Bad business practice

So after being a bday gift. With no prior warning at R1000. On the 3rd went back the 5th. As the person did not like the gift. I went back to menlyn musica as we will never again support them. We have bought close to 12k in accessories, games, console and a pro controller from these *****S. All Nintendo switch items. And the first exchange asked if we get a voucher or exchange in store. And was denied this. Even after no prior warning was givin. I checked the slip that also does not state any details on returns of this nature. The excuse was that it had been opened. Yet it was opened at the counter to see if it was inside the case. I did not open it. There cashier did. So why am O in the wrong here? Do not support these people. So many have liquidated. There customer service should be of the best and this is the experience. You have lost a client that would have spent more. Now he will spend it elsewhere. I could have asked for the cash. By law