I purchased a Antigua spa on Sunday worked fine fo...

I purchased a Antigua spa on Sunday worked fine for a hour that was it nothing is working no control panel power or anything. Emailed several times regarding this had one reply telling me try a new plug and fuse which we have still nothing no control panel working . Not heard or had a reply since . Tried to contact via phone nothing . I know they will be busy but a acknowledgment would be appreciated. Do I take this back to the shop where I purchased for a full refund or do I send it back to the computer themselves. Anyone with any information I would appreciate it