Hello and welcome to JustAnswer,
very strange indeed.
have you seen an otolaryngologist or had a CT scan of your brain to look for something called a CHOLESTEATOMA?
I see you are offline....
will switch to Q and A so you can answer at your leisure.
no, and that's why i mention getting a specialist involved at this point. there is likely a reason that you have this and that it is not responding to proper antibiotic therapy. your GP should, at this point, be considering referral to a specialist. Cholesteatoma, in the link provided above, could be one reason why this is not getting better, and while this is NOT cancer, it does require a specialist to remove it in the OR.
thank you for your question and your business and please let me know if you have further questions on this topic.