No feedback on query after a month

After a year of new house renovations and over R50k spent on items at Leroy Merlin we have queried the last batch of tiles purchased which we realised was defective after our tiler installed it. We’ve sent 3 emails and still no resolution which is delaying our occupancy of the house. The tiles supp**** were incorrect leaving us with an unsightly variation. At the Greenside store we were told that they are all the same batch and the colour will change once the adhesive dries, but no such luck. We’d like the money spent on this last order returned to us in order to redo the affected areas.