Rocko
Great weight loss but the ear ... You MUST go back to your surgeon as hearing loss CAN be a complication of anesthesia. There's plenty on this on the net - here's just one link:
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=3316458&dopt=Abstract
Good luck with getting it sorted and please let us know how you get on.