Techmac TV - non-response to customer in guarantee period

Techmac fixed my TV in August and it stopped working in September. It was a hdmi problem and the main board got replaced. Probably with an old board. The Tv is now not switching on.

After calling the technician that helped fixing it he asked one or two questions and then ignored me since. repeated messages, voice calls and an email go unanswered even though I can see them online and reading their WhatsApps.

So much for their 3 month guarantee if they don't bother to respond on any repair request within the warrantee period.

Stay away from using them for any repairs as they don't do things properly and then don't answer on queries afterwards.