Twitter support escalation worked in the mid 2010s, but basically now the only effective escalation is to send a letter via overnight mail to the CEO office. This has worked for me for major ISPs, cell phone companies, furniture retailers, hell - even the government after some vital records I asked to get duplicates of came unreadable 5 times in a row.
I inherited this trick from my father who had probably used it since the 1950s. It can work wonders. Except Cash App who closed my account for "contacting employees outside of the support chain."
Priority or Express mail. FedEx or UPS can also send documents. The idea is to bypass the normal mail room as much as possible and to get the thing on the desk of someone who is not limited by stupid rules.
Which is particularly effective in this day and age when many businesses don’t handle a lot of incoming physics mail —- send a FedEx to a particular individual at a particular location and it is not like they have a ‘mailroom’ that handles this routinely, it is a non-routine event that somebody shows up at the front desk to deliver something and inherently memorable.
