The following links may help you solve problems with popular wallets on your own:
Desktop Wallets
JAXX: https://decentral.zendesk.com/hc/en-us
KeepKey: https://support.keepkey.com/support/solutions
Ledger Nano S: https://ledger.zendesk.com/hc/en-us
Multibit: https://multibit.org/help/hd0.4/contents.html
Trezor: https://trezor.io/support/
Bitcoin Core
Official Help Pages: https://bitcoin.org/en/bitcoin-core/help
Community Help Pages https://bitcoin.stackexchange.com/
Electrum http://docs.electrum.org/en/latest/faq.html#
Electron Cash: https://github.com/fyookball/electrum/issues?utf8=%E2%9C%93&q=is%3Aissue
Daedalus Wallet: https://daedaluswallet.io/faq/#support
Exchanges
Coinbase Support Site https://support.coinbase.com/
Poloniex https://poloniex.com/support/
Online Wallets
BitGo: https://bitgo.freshdesk.com/support/home
Blockchain.info: https://blockchain.info/tr/support-desk Help Pages: https://support.blockchain.com/hc/en-us
BTC Wallet: https://walletsupport.bitcoin.com/
Coinapult: https://support.coinapult.com/support/home
Coin.Space: https://coinspace.zendesk.com/hc/en-us
Cryptonator: https://cryptonator.zendesk.com/hc/en-us
GreenAddress: https://greenaddress.it/en/support.html
DigitalBitbox: [email protected]