is anyone having network issues with galaxy z fold 3??

Hey guys... This issue happen to me as well. I bought my phone directly from Samsung ..after I did the update my phone went to crap I took it to 3 different TMobile stores and changed sim cards thinking that was the issue ..finally decided to ship it back to Samsung . 6 days after I sent it I received my phone back they told me the replaced the mother board on my phone and said it was fixed. When I opened my box from their shipment my phone was scratched. Btw I had the phone less than a month before this. I said w.e I just need/ want my phone back as I use it for work and personal use. Put my sim card and  NOTHING still the same problem immediately called them back. 2 hour wait time so I decided to have them called me back when it was my turn. 2 1/2 hours later they call back. I answered.. says I'm first in line and my call with be answered shortly 45 mins later nothing no one ever answered so I hung up. I called Monday and they said someone should be contacting me but the end of the week. Today Thursday I called they told me they were going to refund me my money because the phone couldn't be fixed. I turned in my note 10 which was flawless at the time and now I'm stuck with out a phone. Really annoyed and frustrated with the way Samsung has handled my situation !...looking into another Samsung device because I can't stand iphones