Money taken from account but got no SMS

I reported ********** transactions on my account in November 2014 at Lambton ABSA. Thereafter I was never consulted on the investigations and nobody has ever called me. Upon making enquiries, I was informed that a letter has been written to me and till today I have never received such a letter. I went back to ABSA to check progress on the matter on the 28.01.2015 . I was informed that the matter has been closed. If investigations were done, why was I not been called to check where was I on those days and I need them to give me proof of the purchase because I should have signed the receipts. I do have notify me service, and most of the time after swiping my card it will notify me whether transaction has been reserved or payment is immediately off. And on those occasions there was nothing. My reference with ABSA *** and my email address is [Email Removed]