Faulty geyser

I'm Gladile Sindiswa Tumeka I bought a geyser at cashbuild on the19 November 2021 last week Friday. On Saturday the 20th November the plumber was installing the geyser and found out there was a leakage . On the same we bring back to cashbuild. The manager said she will forwarded the picture of the geyser to the supplier then the supplier will call me, and everything will depend to the supplier. They will come to my house and assess the installion of the geyser. Yet I didn't get call from the supplier. The geyser is still in my house. I'm failing to understand who supposed to put pressure to the supplier? Please help on this matter