How can I fix my phone?

my huawei y625 stopped charging sometimes I had to hold my charger a certain number of ways for it to charge, sometimes the battery % stayed the same or it went down... after sometime it stopped charging, it died and wont turn back on. Im sure its not the charger because I got lots of chargers that I tried and they all work for other phones but not for my huawei y625. any solutions? I brought it back to the strore but they told me to send it away. I cant do that because im going on holiday next week and Im afraid I wont get it back by that time. So im hoping il get some solutions here.