No Feedback on my account

I usually pay my account using the same recipient monthly. I wasn't aware that I'm paying my account using a wrong reference number. So I always email my recipient so that they can allocate my payment. So I have learnt that they still changes interest on my account even though I sent the recipient on time. I want all the interest to be reversed cause I'm sending my recipient though email and they always allocate the payment later. Secondly I've asked for my statement since June no one bothered to email me one. The only thing the know is to harass you with calls with their rude consultants.