Bad service - ********* employees

I had taken my daughter to see the pediatrician on the 29th of February 2016 and paid cash. I sent in a claim to be reimbursed on the 2nd of March 2016. I confirmed with one of the agents that my documents were received and she also confirmed that the process takes 5 working days. I called again on the 10th of March to find out what is happening with my claim, the guy said nothing has happened as yet and he will be escalating/expediting the matter and the payment will be made in 2 working days. I called again today on the 14th of March first spoke to a lady and she said the request is in batch 41 and cannot be escalated I didn't accept this and demanded to speak to a manager. I spoke to Nick who said he will send it to a manager for approval this takes 3 working days and the payment will take 2 working days. So I have to wait another 5 working days!! This is what I was told on the 2nd Its 10 working days later and I have been told I must wait an additional 5 working days. Also Nick told me that only a supervisor can escalate a request, saying it had not been escalated before which leads me to think the previous agent I spoke to on the 10th who said he would escalate the matter ****