transaction rejection due to lower miner fee and refund

[Qasthum]

I had initiated a small Bitcoin transaction few days ago to pay mBTC 22.4 to a hosting space provider but due to lower transaction fee, mining nodes have rejected my transaction. My transaction ID : 3ae281c00bb10935ff2638102f9be71c888c95a33ef21a2e5770dab856e759a0

Now, how do I  speed up the process of getting my BTC back to my wallet? My Multibit wallet address: 1G8AqNDS92zCUumVTHdhLnDu7MRMAAPjs3 

[NeuroticFish]

Your transaction was not dropped by everybody. You can still find it on most blockchain explorers. https://btc.com/3ae281c00bb10935ff2638102f9be71c888c95a33ef21a2e5770dab856e759a0
Your transaction uses 2 inputs and one is also unconfirmed (low fee).
Neither of the wallet addresses for inputs or change is 1G8AqNDS92zCUumVTHdhLnDu7MRMAAPjs3.
The 3 addresses are 125QggAD3jP6TRqDt5bYKRqVgKGBxURP7C, 13gYgZLYLY7cXaCsqimASXvK2d2E3jBJks and 13WDETyK5XVdxwnqjnuA7XMehz5HerxRwd; I expect you wallet knows them.

Make a fresh backup of your wallet and/or the private keys of the addresses I told you about. I would get the private keys of all the addresses I can from that wallet and move to another one since people are reporting quite some bugs there lately.
However: Reset blockchain and transaction data, it may do the job.
If that doesn't work, I would import the private keys into Bitcoin Core wallet (although that using bitcoin QT means a download of over 100 GB of data to sync)

PS. You may have to resend (or move all your money) to another of your addresses with high fee to make sure that the initial transaction (3ae281c00bb10935ff2638102f9be71c888c95a33ef21a2e5770dab856e759a0) will not be confirmed after some more days.
PS2. You still have another unconfirmed transaction too, remember? If that's under your control, that's the one you should send to a new address of yours with high fee; else use a really high fee for the double spend of 3ae281c00bb10935ff2638102f9be71c888c95a33ef21a2e5770dab856e759a0 to trigger a CPFP.