Customer Service needs a upgrade

What an unpleasant experience , my pay date have changed and today i get a call that I haven't paid but the best of all is i have emailed them in may to say my pay date changed the rudest woman phoned named Norma when i told her i have to forward that email to her as i did but she gave me the wrong email address I at least had the desentcy to phone back and say the email came back she sighed at me and read her email to me like I am an idiot child , maybe your customer service should get a decent upgrade the people working for you are a joke, i emailed in 2016 as well asking for a paid up letter still waiting so maybe check your emails first before phoning people with your ****py attitude after all with out us you would be out of your job that you take for granted