Samsung Tab 3 - What a dissapointment

I got a samsung tab 3 on contract from MTN just over a year ago, However the phone as been more trouble than good and Samsung suppose to be such a brilliant cellphone company, Well something went wrong when it comes to this Tab 3, I already had this phone sent in for repairs twice due to phone freezing for hours on end and just switching off for no reason, The phone came back from repairs and report showed phone is working just needed a software update, and not even 2 weeks later the problem just comes back, I took my phone in again and was advised to send it off for the 3rd time as it is still under warranty so again I need to sit with out a phone for 2 weeks.The phones newest thing is to get so hot that you cant hold it in your hand and just keeps switching off, WOW I must say for a first time samsung cellphone user I cant say I will be a repeat customer. I am still paying monthly on this phone but no one has a problem to take my money thats always on time, but its fine for me a customer to sit without a working phone for weeks on end.