Sorry to tell you but this looks like a scam. The Twitter handle for blockchain.info is on their website, and it is not @SupportWallet. Next time, cross-check. Legitimate handles also usually have a verified tick next to them. Like I said, they don't offer an acceleration service, you they were trying to scam you. Which reputable service would let you talk to them through Twitter DM and ask for a direct payment anyway?

If you're really willing to pay, go for ViaBTC's paid tx service (check their FAQ).