Purch Kulula Sarb???

Today I received an in-contact notifying me that an amount of R637.12 was paid to Kulula Sarb. I contacted Kulula to find out what this was about. They couldn't help instead they gave me a cell number of their ***** department. The first thing this guy asked me was my bank account number, somehow I found it to be so dodge.<br> FNB my bank couldn't help either but told me the purchase was made on the 26th of July. And I have no knowledge of this. Please can someone assist me on a way forward.