I was invited by a company for an on-site interview. Before I could even ask about it, I was told (in writing) by the HR person inviting me (let's call him David) that my accommodation expenses will be reimbursed and that I will be given some fixed amount of money to cover all the other expenses (eg: travelling, food).
I went to the interview and after a few days I received an automatic mail from a service email account telling me I was not successful. I wrote to David (my only point of contact with the company) to get information about the reimbursement but I received no answer. A few days later I received another email by him telling me again I was not successful. This email was not "tailor-made" to me, but just a standard template. I tried again asking him about the reimbursement and again I received no answer.
Two weeks has passed now since I tried to contact David the first time.
The company is quite big (>10k employee) and I don't think there is any attempt here to save money by not paying me. My suspect is just that David is a little bit careless or busy elsewhere and my personal case is just slipping through the cracks.
I am considering writing again to David, or looking for the email address of this boss/general HR and writing them. Is there anything else that I can do? Should I raise my voice or consider this kind of things "normal" and just wait for a peaceful ending?