Atrocious signal

After another lengthy online chat with Smarty this afternoon, they have concluded that - "We won't recommend using our SIM in this location". This is despite the Three network coverage map showing - "Yes, very good service.
Great news. You've got very good 4G coverage for calls, text, and mobile internet". This has been escalated, hopefully for correction.
I do at least admire the person to whom I have chatted being totally honest about this issue and a refund for my first payment has been actioned. We could have saved a lot of time if my earlier conversation had been equally 'up front'.
Back to EE for now and the search for a reliable provider will continue.
Thanks everyone for your contributions during my short stay!