Problem with Absa reserved payments

Good Day

I am just a bit confused with the way Absa handles reserved payments. What happens is that I make a purchase, I receive a notification that money has left my account, then 2 days later the money leaves my account again! So when I purchase something for example R150, I receive an sms notification that 'company name' has reserved R150 for a purchase. Available balance... Then 2 or 3 days later, that same money leaves my bank again! This cant be right? But I have proof. Please can someone assist. My account is now overdrawn because of these double transactions. I have visited an Absa branch regarding this matter but they cannot identify the issue even though my notification messages show everything, their answer was to replace my card at a fee!