Poor Customer service and lack of respect towards customers

I bought tiles from tile for all on the 24th Nov 2023, the tiler installed tiles the normal way they usually install tiles after installation he put grout into tiles after he wash tiles with sponge the following day tiles were white i woke up and clean them again in my thought i was thinking that is all due to grout not cleaned properly after i mop tiles becomes clean when still wet after drying they became white again then I called the shop I explained the situation store manager came and view the situation then send someone to come and clean the area , the guy cleaned the area the whole day when the floor dry's the tiles white sport came back again, then the matter was escalated to the supplier SINOTILE then Michael De Wit Sales manager from SINOTILE came to my home to check the situation, I was so disappointed and felt so disrespected by him when he tells me that me and my helper we must scrub the tiles, honestly the only reason i spend 25k to install tiles was to make my life easy but only to find myself being told by tile supplier that i must scrub the tiles , the problem their tiles are not stain resistant any spillage to tiles just create a stain , I feel the supplier does not want to take any accountability for their product that is just a ******* to customers.