<prompt> Human: I am 23, and worked in the united states during 2014 Dec to 2015 Feb at a large tech company.I payed PAYE tax during this time, but since I was only working for part of the year, I was entitled to a tax rebate.This period overlapped two financial years, and so I had to file four tax returns in total - one each for the state and the federal, for each year.I used TurboTax to submit my tax return.The 2014 tax return was processed successfully, and I received my state and federal tax refunds into a united states bank account.When it was time to file for 2015, I realised I had misplaced my 2015 W2 form.I made a really poor decision and instead of contacting my employer and asking for another copy of the document, I attempted to fill out the tax return guessing which values were correct based on my payslips etc.I have still not received my tax refund for 2015 which leads me to think that I filled out the details incorrectly.As far as I know, the IRS only communicates this kind of discrepancy via physical mail, however I live in South Africa, and I suspect that physical address that the IRS has for me is either incorrect or that our unreliable postal system has lost some correspondence between them and myself.At this point I am unsure whether to attempt to contact the IRS myself, or to contact a tax professional based in the USA to do this on my behalf.I would like to know:1 Any general advice about how to proceed?2 A recommendation for a personal tax professional accountant? that is able to help me resolve this issue both federally and with the state CA?3 If there is any other way to communicate with the IRS other than physical mail?I attempted to phone them in the past, and they mentioned that they could see a discrepancy with my tax return, but that they could not tell me what it was over the phone.  <response>: Call the IRS International Call Center Monday through Friday, from 6:00 a.m. to 11:00 p.m. Eastern Time: Tel: 267-941-1000 not toll-free. 