worst experience at Dion wired

So i bought a brand new phone yesterday, i left it at home, sealed and unopened all day long, in the evening when i returned home i took it out of the secure place id kept it and put it on charge. i waited for it to be 100 percent battery before i switched it on. When i switched it on the phone did its usual set up options and so on... it then got to the point of asking me to input my Gmail and accounts and so forth, but the moment i attempted to put them in but it wasn't working so i rebooted the phone and tried again but still nothing so i decided. ok ill take it in tomorrow and easy fix i will receive another one. easy as that, right? WRONG! for a full 3 hours the store had me sit and wait for them to receive a call from technicians to tell me the phone would need to be booked in for evaluation before id be allowed to get another one, but not even to get another one the manager told me that if the phone came back with no faults (which i doubt (it could also have been tampered with on that side)) then id have no choice but to take the dud phone that theyd bring back. When i told the manager i didn't want the money back i just wanted the exact same phone just another one he said "whats the point of you even want the same phone then? what if it does the same ******* like this one" so then i said "ok fine then i want a refund right now" to which he rep**** " lets wait for the diagnostics to come back before we continue with this matter"

now look, im not the type of person who likes to start trouble, if i buy a product i expect it to work and if it has any fault i expect to have it exchanged immediately . not only was the service i received poor at the Dion wired along with a rude manager but the product itself was faulty. speaking from personal experience as i have had that exact same model phone in the past and it gave me no trouble whatsoever but the one i purchased just yesterday has already given me a full days headache.