No way to get a response from Coinbase other than occassional Reddit replies. Phone support claims to investigate and no reply again. Status page has been showing fluctuating numbers (e.g. "up to 5 business days") but about a month already in my case.
https://www.reddit.com/r/CoinBase/ for many such stories.
https://www.reddit.com/r/CoinBase/comments/7mpk7s/upvote_is_your_wires_withdrawals_are_from_dec/
https://www.reddit.com/r/CoinBase/comments/7o6nqb/880000_withdrawal_delay/
https://www.reddit.com/r/CoinBase/comments/7o4tgz/please_help_coinbase_lost_my_8000_usd_wire/
https://www.reddit.com/r/CoinBase/comments/7o7wxa/its_time_for_organized_legal_action/
https://www.reddit.com/r/CoinBase/comments/7nnqxx/us_wire_transfers_from_coinbase_to_bank_from_dec/
https://www.reddit.com/r/CoinBase/comments/7mpk7s/upvote_is_your_wires_withdrawals_are_from_dec/
https://www.reddit.com/r/CoinBase/comments/7kwllo/stop_giving_lies_and_false_hope_with_up_to_3_days/
https://www.reddit.com/r/CoinBase/comments/7kt75b/coinbase_not_paying_out_i_transferred_26k_by_wire/
https://www.reddit.com/r/CoinBase/comments/7mcy2n/up_vote_if_your_wire_withdrawn_from_1212_1215/
https://www.reddit.com/r/CoinBase/comments/7nntqf/waiting_for_30k_wire_for_two_weeks_already/
https://www.reddit.com/r/CoinBase/comments/7o6oyv/list_of_cases_for_olga_from_coinbase_sepa_and/
And many more.
Hoping this is just growing pains, but the lack of communication is scary.