Hash is within an array so use this
p FIXED_COUNTRY_TO_PHONE.map{|x| x[:country]}
output
["FI", "SE"]
If you want to take the first country then
p FIXED_COUNTRY_TO_PHONE.first[:country]
If you want to take the last country then
p FIXED_COUNTRY_TO_PHONE.last[:country]
Getting the country code according to country
p FIXED_COUNTRY_TO_PHONE.detect{|x| x[:country].eql?'FI'}[:customer_phone]
12
solved Get value from Ruby hash