Problems after system update

Hi, seems like I'm not the only one...A32 4g here I purchased in france last year was just fine before the August 3rd update. On 4g I only receive texts and have internet access. Switch to 3g only I can make calls send texts no internet or limited.  2hours with T-mobile tech support turned off plane mode. Reset network. Turn phone on and on etc...August 4th 2 trips to TM store only worked briefly gives me an H or H+ signal. August 5th trip to TM they told me there's nothing else they can do for me. Called Samsung send me to a certified repair shop Best buy 45 minutes away to be told they don't even have the diagnostic support for A phones. By the way as I was nearing that location my phone worked on 4g...Go figure! I rested Sunday the 7th..at it again Monday the 8th talked to 4 more people At TM support. Wanted me to do a factory reset. Monday evening went for a ride phone worked properly around a business area....I backed up my data waiting for a call back Tuesday to be told that my phone was now partially incompatible with the network "most likely because I bought it in France!!!!" At this point whenever I go somewhere I test the 4g for calls texts and internet I'll be getting a call back from the Tech Support in Alabama from Phil Thursday afternoon. I don't want to do a factory reset if I don't have to. This stinks but now that I see I'm not the only one their France purchase excuse is now out the window so thank you all for posting,  I'll keep you posted 🤬