Transaction stuck for 2 days

Hi guys,

I made 2 days ago around this time a btc purchase from 150 euro. I send the coins from the place where i bought it to another exchange named Bittrex. I bought the btc to buy some altcoins, but the longer it takes the higher the prices get after the dip. After some reading I saw my fee is in this busy time too low but for me it was a 2% fee of my transaction and hadn't much choice for another fee. I tried a few times to accelerate it at viabtc but i didn't come trough every time i tried. My fee is around 120 sat/b

My TXid is: ef338aef21e3693485a20fddf57edff713df787aaa685577ed91dfa655670a15

Can someone help me with accelerate my transaction? I have no time this weekend so i prefer to buy it tonight. I will give a tip if I have my transaction conformed tonight.

Much thanks if someone can help me with this.. didn't expect to wait longer than a day, now already two days waiting...