why is there so few service centers for phones????

i would just like to say, my husband and i have used samsung for years, and are very loyal consumers in this brand, from cellphones, to tvs, fridges etc. but i am completely flabbergasted and their service delivery. upon my note 4 screen cracking, i decided to try my local dion store in fourways help fix my screen, but they had told me they no longer had a contract with samsung, so i then went to mtn, who told me it would take 14+ days if they had to send it in, and that i should try the repair centre on 14th ave. they handed me a flyer stating the working hours of the service repair place, which did state that they worked weekends. so we drove allllll the way there to find out they dont. and that they are only open from 9am- 5pm or something ridiculous as that. how can a HUGE brand like samsung, with a HUGE consumer base, only basically have one service repair centre???? i ended up taking it all the way to dion in moreleta park, and it has been there for 2 weeks now, and they havent replaced my screen as yet as they are waiting for parts????? SCREEN REPAIR! its ridiculous!. 2 weeks for a screen repair or me having to take leave from work to drive all the way to 14th avenue.