**Amendment** - Once I posted the below, Getaroom did call me to resolve my issue and provided a refund of the 'tax'. Very pleasant customer service lady (unlike the original person I called) but slightly disappointingly their customer services are in the USA so the international call cost me £16.
Their website goes out of its way to mislead you! They advertise a cheap rate and it is only on the page that you enter your booking details that they add an imaginary tax, drastically increasing the overall charge. Calling their customer service is a waste or time and effort (despite calling within minutes of my reservation), as they will basically tell you it was your mistake booking with them and they can't be bothered to assist. A disgrace to the travel industry, don't ruin your trip by booking with them!
Byron,
We do apologize for this experience. A Customer Service Resolutions Specialist will review your case and reach out to you. Our goal with your Sitejabber review is to promptly work for your satisfaction resulting in your improving the star rating. Thank you.
Sincerely,
Getaroom