Cash App complaint: Refusal of merging my account

Around October of 2018 I had created a cashapp account with a temporary number and my email address to make transactions while I was on temporary duty at ft. Polk. I’m originally stationed in Japan so my phone number and sim are setup for a japanese line. Fast forward to March of 2020 I sold some of my items to a co worker as I was etsing, hoping to use the money in case of an emergency with all the coronavirus stuff going on. Fast forward to early July, I’m trying to retrieve my money, and being that I no longer have access to my temporary number, tried to log on via my email address. Instead. The app creates a whole new account with no money on it. I contact a rep in an attempt to have my old account and this newly created account merged, and being that it’s been so long since I last logged onto the app could not provide the old cashtag or phone number. Because of this I’m told I can’t have my accounts merged and to try to contact the person who paid me, but she is no longer reachable as shs is in a different country. However, the email address is the same, and i have proof of a transaction being made with the same email address associated to the old account. I had about $300 total and despite showing proof of transaction, I was refused having my accounts merged.

First off, even if I had the old phone number, all the app would do os send a code via text, to a number I no longer have, which is why I relied on the email address to gain access. Secondly, why would the cashapp create a whole new account with an email address that was already attached to an already existing account? I need my money has times are rough and my job offer has been halted due to the coronavirus.