Bad customer service

I called the makro customer service number on 02-04-2020 to inquire about the Russell hobbs blender on sale but was told they are not selling them because of the national lockdown and that the sale will carry on into may. I called 2 more times and was told the same story, the 3rd time calling I was given a reference number (ref 705829) to use at the store to get my discount when am paying because I enquired about it in april while the special was running. Today I get to the till and the cashier and supervisor dont know anything about this, I call the call center for the the 4th time but this time I get told that not all specials are gonna carry on into may and the reference number is for the call not for a discount. I am so angry because I called 3 times and was told the same story by 3 different people, now am getting a different story after driving all the way to the store wasting my petrol, airtime and time. Clearly the agents dont know what they are doing and will just tell you anything when you call in. This is the worst customer service I've received.