Horrible service that caused me lot of money on a month end

Our system gave us problems on the 29th of September and we logged a case they told us they will assist tomorrow which was understandable today in the 30th which is month end no help we have called they keep on taking us up and down we are losing money and they seems to not care they keep on telling us we are escalating it when you ask for their senior last they don’t know who is their senior which is strange