Terrible customer service I would not recommend!

I had booked a massage session through Daddy's Deals. Before purchasing the voucher, I thought to enquire on their availabilities as I was only in the area for a limited time. I was advised that 2 time slots were available and asked for the company to tentatively book one of the slots. They asked for me to send confirmation of my voucher purchase, which I did the next morning (around 11am). I didn't receive any response until 11pm ****erally before midnight) to let me know that my preferred time was no longer available. This meant that all of my plans for the next day had to change. I was also advised that the POP of the voucher was required in various other formats. I advised that the time that this was communicated was inappropriate and that all formats and requirements should be communicated up front to avoid delays etc and the response I received was mindblowing as this person refused to accept responsibility and receive the feedback. On my way to the appointment, I advised that I was unable to print my voucher as I was on vacation and that the digital voucher has been accepted at other establishments in my experience. This was met with resistance and I was told that I could not proceed with my appointment without a printed voucher. My frustration is that there was no attempt to accommodate me as a customer and this individual could not even explain what the purpose of a printed voucher. The key to great customer service is understanding that your business needs to adapt to the convenience of the customer, not the other way around. I found the service appaulling and the lack of communication frustrating.