Coinbase – Paid for LTC 1 month ago, still waiting on delivery...

It's been a full month now since I tried to buy some LTC on Coinbase. My purchase is still pending however, nearly a month after Coinbase took my funds via ACH. Their support isn't answering, reddit is full of angry people (some in the exact same boat as me) and occasionally a support Rep helps someone there, but I've had no such luck. What can and/or should I do here? Curious if anyone else is in the same boat.