I purchased a Danby freezer 6 weeks ago through a ...

I purchased a Danby freezer 6 weeks ago through a local ( London) distributer. Paid up front, including a delivery fee of $80. It arrived 3 days ago. Within the accompanying owner's manual under temperature control, it states that the NUMBERS on the temperature control knob on the back exterior wall of the unit indicate how to raise/lower the temperature of the unit. However, I had NO numbers on the control knob, just an incremental arrow. No baseline temperature. I contacted Danby and was asked to submit photos, which I did. Heard nothing back.
No response until 48 hours later. I was told to buy a fridge/freezer thermometer to detect the temperature. Really?
Accurate temperatures to ensure safe storage of food....... possibly important?
Unbelievable. The owner's manual is inaccurate, I have to "figure out" what temperature this unit is working at, and, in the midst of a pandemic, shop around for a freezer thermometer.
This is extremely disappointing. Very poor "service" and "support".