Game Evaton Camp master mattres exchange

I bought a camp master matters at Game Evaton on the 25th March 2021and lost the slip. The matters had a balloon on one corner when I pumped it. I tookit back to the store on the 25th April 2021, and they said they will call me. I went back again in May twice they said they will call me. I went back again last week Saturday and they told me same thing again. I'm angry . I'm ****ed, I'm tried of going up and down and I just want them to change the matters

I'm disappointed honestly.