Samsung 21+....Total waste of hard earned money

I bought a Samsung S21+......A very expensive cell phone.....this was the biggest mistake of my life.....This expensive phone...switch on and then start again....by himself.....not once.....but 3, 4, 5 times ..every now and then..... took it to Samsung in Somerset Mall....the answer...they must sent the phone to Cape Town....unfortunately I need my phone for pin codes at work....so I took my phone to Cape Town self..according to the technician...this is the 2nd Samsung 21+ thats doing this.....so he fixed it....phone is under guarantee.....then came all the way back to Gordonsbay.....work well for a while...and suddenly again...shutdown and start again...what a waste of my hard earned money.....consider before you buy a Samdung...total waste....absolutely not happy