Account balance quiry

Hi,<br> <br> Would you please assist me, last year I opened an investment account with African bank and deposited small amount and initially it was for 6-months. When the 6-months lapsed I added an amount of R1000 into my investment account then extended the duration to 5-years. My problem is that the amount that I added does not appear on the monthly statement that they have been sending to me. I have consulted the local branch in Secunda Mpumalanga and could not get any assistant. I have even called the customer center and the said they want proof of payment I have supp**** it several times and now its been 11 months and I have not got any positive response. May you please advice me on what to do<br> <br> Hope to hear from you soon