Trying to upgrade my storage since a long time but unable to do the payment as google does not allow to add banking details throwing an error "Your request Failed. Try another method". further there is no other option available other than adding a credit / debit card. Tried making the payment using various cards and from various devices with none successful. I have stopped receiving my emails due to insufficient storage and this is really frustrating as lot of my work depends on emails and I am missing on my important email. There is no support available online for this issue as well. Kindly look into this at the earliest.