ONCE AGAIN THE CUSTOMER IS WRONG

I WAS INFORMED VIA EMAIL THAT A GATE I HAD TO PAY IN ADVANCE WILL PROBABLY BE INSTALLED ON A CERTAIN DATE. CONFIRMATION WOULD BE DONE BY EMAIL. ON THE DATE OF THIS PROBABLE INSTALLATION, I PHONED TO ENQUIRE ABOUT THE TIME OF INSTALLATION ( NO EMAIL WAS RECEIVED INFORMING ME THAT THIS WILL NOT BE ON THIS DAY OR ANOTHER DAY SPECIFIED ) I WAS ACCUSED OF NOT READING MY EMAIL PROPERLY BEING IMPATIENT AND RUDE TO A COLLEAGUE EARLIER THAT DAY. SHE KEPT ON RAMBLING, INTERRUPTING ME AND REFUSED TO UNDERSTAND MY POINT AND DROPPED THE PHONE IN MY EAR. I ALREADY RE ARRANGED MY SCHEDULE AS I WAS UNDER THE IMPRESSION BY NOT RECEIVING AN EMAIL CONTRADICTING THE PROBABLE DATE OF INSTALLATION ON THIS DATE. I STRONGLY ADVISE ALL POSSIBLE CLIENTS NEVER TO DO BUSINESS WITH ANY MANUFACTURER/SUPPLIER OF GOODS THAT CANNOT CONFIRM AN EXACT DATE OF SERVICE. THE RESPONSE OF HELEN WHEN ASKING HER WHAT DATE THEY CAN INSTALL WAS A SURPRISE TO ME - ANOTHER MAYBE/PROBABLY TOMORROW OR BY THE END OF THE WEEK, BUT STILL NOTHING DEFINITE