Amazon review: Inability to speak to them on the phone or give them my new telephone number

I am currently blocked from Amazon because the 2 phone numbers they have for me are not current so they cannot send me an OTP for security.

All I want to do is give them my new landline number but there is seemingly no way of doing it.

And the number they gave me from customer service does not work.

With Christmas coming I would like to be able to use Amazon to buy presents. I have some mobility problems so tend to rely on it for my purchases as high street shops are not easy for me to visit.

I have used Amazon for many many years and have never been locked out before.

If they were to contact me I would answer all security questions.