Very disgruntled

Numerous requests to Absa's Complaints Department and 2 complaints to ABSA via Hello Peter has still not resulted in any feedback from Absa whether positive or negative. I have reached the end of my tether and am hoping that someone can assist me in telling me what my next step should be. who is next in line after the Complaints Department at Absa? <br> My request/query can really not be that difficult to resolve surely.