Amazon US - cannot even access my own account and no practical way to contact them

In their efforts to improve security they have made it imposible for people to actually access their own accounts. I tried resetting my password, entered the OTP sent to my mail then it asked me for a billing postal code. I only use the kindle services save for one order I once placed - I could not remember the postal code - really!! Now I have to phone some international number to reset me. Firstly I have no access to dialing international numbers and when I tried using that number on whatsapp calling, it tells me it does not exist. All I needed to do was update my credit card on my kindle service, now I cannot do anything. How can Amazon not provide an email where I can send my complaint or request Amazon - your support service to customers out of the US - sucks! Its MY account, I have the email linked to it and can access the email but I cannot friggen access my account because of some stupid additional billing postal code question and now you have locked my account and I have no friggen way of contacting you except for one phone number -who even uses telephone numbers anymore????