Time change incorrect

I returned yesterday from a trip. I changed my time zone during this trip and then changed it back when I returned. However, the time change that was changed back to was not correct. I have no additional time changes available for approximately 344 days. 

I would like to have my game time changed back to what it was before my trip started on a June 29th. I utilized the in game help and it stated they could change back to previous, which wouldn’t work as it is the time zone I used while I was gone. 

Thanks.