Sending Bitcoin again to your individual tackle ought to simply provide you with an error, nothing could be misplaced on-chain. That is most likely an inner Conbase error they need to have coded their system to acknowledge and reject.
Conbase Assist Stage 1 is extraordinarily understaffed, undertrained, probably is overloaded with requests, and doubtless doesn’t perceive the problem within the first place. You want to escalate to a Stage 2 or 3 rep who can dig into the Conbase system and get your Bitcoins again. Stage 1 assist probably can not help you. Not as a result of they’re incompetent, however as a result of Coinbase shouldn’t be correctly equipping them to do their job, with low staffing ranges and poor coaching
I extremely doubt your transaction was really posted to the Blockchain, that means you by no means misplaced any funds. That is an inner difficulty to Conbase
I like to recommend taking the problem to social media in case you are getting clogged up at Tier 1 assist, a social media supervisor may even see the dangerous publicity and be capable of get you linked with the next degree assist rep. Strive speaking to a few of the Coinbase competitors, equivalent to eToro, iTrustCapital, RocketCoin, or MyDigitalMoney. They cannot do something to get well your funds, however they could (might!) scent some low-cost PR, and reimburse you with a few of their very own Bitcoins, to show how unreliable Conbase is, and the way dependable they’re, in the event you can present proof that you’ve got tried and failed for months to get wherever with Conbase. If I used to be them, that’s what I might do! Only a suggestion
Additionally, ALWAYS preserve cash in your individual {hardware} pockets, by no means go away them sitting in an alternate, for this actual purpose!