Poor network coverage (network status) - new joiner

Hi - I thought I'd replied to this, but it seems I hadn't.  Thanks for your suggestion. I did contact them and the response was pretty unhelpful.

For completeness here's where and what I've checked:

Check your network coverage result based on my postcode is "3G - yes you have service; 4G - yes very good service; 5G - yes 5G is available"

Network Status Checker "We're fixing an issue with our network in this area. We’re sorry for any disruption you experience. Our engineers are working on masts nearby, which means the rest of our network is handling more traffic than usual. Updates on our work will be posted here. We’re working as fast as we can to build a better, stronger network in your area."

The second link is the one I find somewhat frustrating. Whilst the 'last updated' timer regularly changes at the bottom of the message, the message has remained the same since I joined Smarty. It tells me nothing about what is actually happening (and neither could Support). I fully understand maintenance and upgrades are required from time to time, but I don't understand how I'm supposedly getting excellent 4G from one link and issues from the other.

I live in a modern building with minimum obstruction from building materials. I'm close to phone masts and I get excellent indoor and outdoor signal with Vodafone and EE. I have tried this phone/SIM in other locations in my city and elsewhere, which work fine. So this seems to point to the issue being the strength of signal at my home location (indoors and outdoors) through Smarty on Three. 

Rebekah_150 tagged for info and potential follow-up.