Candy Elmo

Dear all I've purchase the fans (4set) last year (less than 1 year) from the Sense N Bedeck IMM outlet and the lady boss keep hard selling the Rega 3381 to us. And my mum does not have a stand on it, so she purchase it. after all the installation, all the fans are having problems. 1st set which is installed in the master room is having the 'clickclickclick' sound, especially in the night. we tried all the speed but still the same. Changed and repair 3 times on it, it remains the same. after some questions that i asked customer service and i insist on changing the motor of the fan, it went smooth for the night. the sound of the fan is solved but it came the light issue. i was having disco lighting in the room while i turn on the switch. notify the customer service, come and repair etc, still the same. seems like their fans are having issue all the time? 2nd set which is installed in the common room - having the 'clickclickclick' sound (as usual) and it is loud till night unable to sleep. turn to the highest speed but no feel of the wind at all. it became so hot in the night and totally unable to fall asleep. told the customer service, and they did send it down the technician to repair. asked the guy and guess what he say, is like that the speed and the wind. I was so stunned and the words are totally different from what the lady boss told us. felt so cheated. 3rd set which is installed in the 2nd common room - no issued as seldom used. 4th set which is installed in the living room - turn on to the highest speed end up, no wind. I was thinking if we are able to exchange the whole set to another brand. I really dont mind to top up any extra to get a better fan/brand which dont have any issues/problems instead keep calling the technician to come down. anybody did try to exchange? pls share with me your experiences. thank you