We put a new ecommerce site live on Magento2. We were short on time, so to make everything go more smoothly we chose to move our payments to Braintree as they have an pre integrated checkout with Magento2. Of all the things I thought I would be sitting up all night sorting out, I really didn't expect it to be Braintree, but it was. I'm sorry if this sounds harsh to Americans, but the fact it was thanksgiving did not interest me in the slightest, as we are at work that day, and so are our banks. If you want to sell your service in the UK you should be available 9-5 UK time. Braintree's 11 am opening time, was the most infuriating thing when I could see customers failing at the checkout. Other US companies I speak to have operators on from 9am our time, even if it is 3am over there. We already have a high volume Paypal acocunt, and I had to call everyone I could to pull strings to get them to answer at Braintree. Turns out the account I set up with them some weeks before had not been pushed live, except they told me it had, so we only had the introductory level of payments.
Their integration with Magento sucks too...Set up all of the anti-fraud tools and you will barely get a payment to go through...