SYSTEM NOT CORRECT. LACK OF SKILLS

26/02/2016. I had a tyre cut from a pothole,which is a run flat on my Mercedes C200. I then took tyre off and went to Supa Quick Fourways and asked for a Continental 225/45/R18 YXL Run Flat they did not have stock and told me Kempton Park had two in stock. I then drove all the way to that branch asked if they had stock and Thando rep**** yes. I then gave him the wheel with damaged tyre on. Once they were complete I paid for tyre and on return to Fourways at home. I fitted the tyre and realized they gave me Continental 225/40/18 Run Flat which is incorrect spoke to Yolandi,Thando and Mario they all said they were sorry.According to the system is not updated...why do they show on system and when there is no stock.My plans for the weekend is totally ruined as I cannot drive this car with an incorrect size as my motor plan will be forfeited as this is a new vehicle. Then my wife went to Fourays at 12:00 and they were closed why.....? when they should close at 13:00. This is truly a sad experience as I have always rated Supa Quick to be professional and effective now the family is stuck in Gauteng and we cannot go for a well deserved break.How does one move forward !!