Guarantee service non-existant

On the 29th September2020 I went into Makro Strubens Valley to report my 55" TV not working that is still under guarantee, this after phoning the customer care line who told me to just report it at the branch and take my slip with me. I went into the branch and was told that they would need the serial number from the TV to be able to report the faulty TV, the call centre didn't tell me this so I had to go and get the serial number for them. According to Sinotec the serial number wasn't supp**** to them, they only phoned me this week on Tuesday to get the info. I gave them the serial number and still nothing happened. I phoned today and was told they will now appoint a technician for Monday. The service I have received so far is nothing short of disgusting. This is also not the first time we have had issues with Makro and guarantees either.