Calasca: cheaper product supp**** and no replies to correspondence with One Deal A Day

Calasca through One Deal A Day sold flooring which was advertised and invoiced as 7.5mm and supp**** cheaper 5mm floor mats. They have disputed that that this error was made whether intentional or not, stating that the correct product has been supp****. I supp**** them with photographic evidence of the issue and they have not rep**** within the last two weeks and do not supply a phone number.