Service is bad

I had contacted the company as I had issues with my fridge they came fixed it It worked fine paid them over R900, was told there's a warranty of 6 months that was on the 12 of April my fridge started no cooling things on the top and my freezer also stopped working have been calling them and sending messages they promised to come on the 16 June till today no one has come things in the fridge are now rotten and no 1 will be reimburse for them I need help