A couple of months ago I asked my manager for a promotion in job title and the salary that goes with this. I was told off the record that this was not likely to happen. I proceeded to look for roles outside of the company and with the help of my manager through interview prep I was able to secure a better job elsewhere. I told my manager that I have accepted the job and that I would discuss notice with him at a later date after I received the contract.
My manager approached someone internally about my role before I handed my notice in. The person then went on to discuss my role with people around the business, many of which were my stakeholders. Would this be a breach of confidentiality? I had not actually handed my notice in at this point.
Said person then decided he wanted my role and I saw that my manager had agreed to give him the higher title that i asked for a couple of months earlier. He has no relevant experience in this kind of role and his experience in general is less than mine. All of this was done before I actually handed my notice in.
Any ideas where I stand on this in regards to confidentiality? I have since handed my notice in and have to work my long notice of a few months but this has all left a bad taste in my mouth.