Bad business practice Airlink

I have had the same issues now 3 times with the Airlink booking App. Last time on 26/4/24. When you log in a flight is quoted at acertain price. Today the original price for the flight was R1841,00. For no reason, there was an error displayed, when I booked. I refreshed the app but the same flight was now R2 194,75. This is the 3rd time this happened while booking an Airlink flight. To many times for coincidence!!!!!