Garmin disappoints with after sales service

I have bought my Garmin Forerunner in November 2019. This was a replacement on a faulty product. I bought this from Sportsmans Warehouse, Northridge Mall.

The watch started to give problems and I took it to Sportsman on 25/08/2020. I was advised that Garmin make use of their own courier to collect items for assessment and was informed that Garmin would fetch the watch at the latest 31/08/2020. I only received a message that the watch was collected on 4/09/2020! Garmin notified that the item was received for assessment 08/09/2020. I was just informed that the watch will be received on 18/09/2020! How do Garmin expect one to use a product for daily training when it takes almost a month to assess? Is this what Garmin’s after sales service looks like? This is unacceptable!