Huawei online store

I purchased a Christmas gift for hubby on the 13th December 2019. It was a Huawei Talkband B5, which was delivered with 5 working days. He started having issues with the band by April and decided to go to the Huawei store at Gateway as we live in Yellowwood Park, which is South Durban. We received a recommendation from the store Technician in a letter to replace the device as it is an issue with the main board failure. As it was lockdown when I attempted to call the customer service on line they told me that they will get back to me in a few days as they were not sure how to proceed. Two weeks later I called again only to be told this is an online issue and must be dealt with online. Needless to say I was extremely disappointed as Huawei comes highly recommended but such poor customer service. I tried online to no avail and decided on the 2 July to send an email to the address that sent me the original invoice and still nothing to this day. I am at a loss how such a big company can be so callous about their products and their customers. This costed me a lot of money for me at least at a time when we really can't afford to be spending unnecessarily. I have got a band that just does not work and will soon run out of warranty. Please can someone help, where and how do I go about getting this device replaced.