Arrow 4.4.2 Exchange service stopped working.

Hi guys,

My Exchange service stopped working and I can't synch my gmail/whatsapp/outlook nothing anymore. It's getting annoying cause it drains a bit of my batt. I can't synch my contacts or mails etc. This just happend 10 min ago and there are threads made about this but it was on 4.4. I thought that it was fixed on 4.4.1 but I seem to have it.

However, since I learned that there is no pc companion software or any other suite app to go factory with a clean install unlike my Sony Xperia Z.

Can someone please help me out, I don't want to unlock my bootloader or root my phone as I always did with my sony's.