Subscription plan purchase

Tried to but a standard subscription on about 20 occasions, the website says authorise payment yet when pressed the screen buffers for hours and nothing happens, I have repeatedly filled in my full details which it won't accept, the infuriating chat bot sends you round in circle until you finally get to speak to a human who then say its the banks verification system that's not allowing the payment to go through, so I check with the bank who say ring are talking out of their ring!! So I phone the customer support centre and I get put through to someone who clearly isn't from the u. K and can barely speak English, after another infuriating conversation were I have to repeat everything 50 times I get told...... It's the banks fault!!!! Why not have a u. K based support centre with people who can speak and understand English? Oh and I've linked the ring account to my amazon account ans still nothing.. Any help?