Incorrect product delivered and no after sales service

I ordered the Garmin Instinct 2 solar (black) watch on Totalsports online shop. The product that was delivered is not the solar edition, just the normal Instinct 2. I went to one of their stores to exchange the product, but they checked on the system and found that none of your stores stock the Garmin Instinct 2 solar (black), just the blue watch (tidal blue). To date, after logging the issue, sending 2 follow up emails and phoning their call centre, I have received no feedback at all, not even acknowledgment to say that the issue is being addressed. 2 weeks has passed since I logged the issue originally. I have phoned the call centre for the second time without resolution, just feedback that someone is look at it. I requested to speak to a supervisor, but she(Wendy) apparently could not take my call. My contact details were taken so she could phone me back, and to no surprise I was not phoned. The after sales service experienced so far has been pathetic. I would recommend staying away from the online shopping with them.