No response on return and misinformation on product

Hi I bought a Garmin Forerunner 30 on 28th June from Honest at Sandton after I explained the features I was looking for of which virtual pacer was key. There were only sealed boxes available at the branch and I could not try or test a demo model.

I subsequently charged and wore the device on the 30th June and struggled to find the virtual pacer. The Brooklyn store on 1st July called their specialist Tebogo and she said she would google this feature and revert to me – I was in a hurry so I left the store and said I would return at another time.

I have subsequently done some research only to find that this model does NOT have the feature and I would like to return it as I was assured by Honest at Sandton that it had the virtual pacer.

I have called customer care and Paren said she had no idea whether I could return a used product nor the returns policy w.r.t. the time period during which returns are accepted. (4th July about 13:29) I called Sandton on ********** thereafter and only received an engaged tone. Thus I called Brooklyn and Tebogo on her personal cellphone. I subsequently received a response from Tebogo that her manager has advised that I take the device back to Sandton.

I have called Sandton numerous times to no avail and the number remains engaged. I live in Pretoria and cannot drive to Sandton to resolve this matter today.

Please advise on the next steps to return and refund this device in lieu of possibly another device with the required features.