I should get perfect 4G, per the tracker. I don't even get 3G, in 2024.

SMARTY intends to disable their 3G network in +2024, per https://smarty.co.uk/3g-switch-off. This is problematic for me, because 3G is all that I occasionally receive. However, entering NR11 7HP into https://smarty.co.uk/coverage-checker demonstrates that I should be able to access “Excellent” 4G (I presume LTE?) coverage. This isn't true, despite https://smarty.co.uk/network-status-checker stating that the network in that location is operable.

I barely get 3G for £30 a month somewhere where SMARTY reports it should be excellent. Should I take this up with the Ombudsman? Make this make sense.