Unhappy customer

On the 23rd of December 2021 i had purchased 2 zingo s******s for my kids from the Game store at Ballito Junction Mall. The kids would only be able to play on the s******s for a few minutes and then the batteries would need to be recharged so i asked them to pack it away so that we could take it back to the game store. We were away on holiday and when we got back i took the s******s back to the store and they had then sent it to the Tevo Service centre for repairs. It took 4 weeks for the s******s to arrive back at the ballito game store. It had arrived on the 3rd of March 2022 and i picked it up the same day at 16:30 when my kids decided to play with it the next day my daughter noticed that her s****** was smoking from the battery, So i took it back to the store and asked them to please give us a new 1 as this was purchased brand new and has been faulty ever since. They said that they cant do that and that it will have to be sent for repairs again. But this time it wont take long they will repair it and get back to me withing a week. It has now been almost 3 weeks and i hace gotten no feedback at all from them. I try calling the game store but nobody ever picks up and as for the tevo customer care its always busy. My child is on school holiday now and this wait for the s****** is rather frustrating.