Product: Checking or savings account

On XX/XX/2023 We went to capital one bank in XXXX NJ to open an account with a check from a job we need complete. 
Check was for {$30000.00}. I was in the bank personally and asked XXXX about the funds being cleared to be able to operate. They gave me a confirmation and so we opened a business account. 
We only had 2 check and no cards from the bank.

I wrote 2 checks one for XXXX and XXXX for XXXX to pay contractors. 
the XXXX check was cleared fine but the XXXX bounced with " refer to writer '' or something. 
I went to the bank immediately as I was not informed of anything by the back. no call email or anything. At the branch I find out that the person who opened my account mistyped my SS #, brought my card to the branch filled a form they made copy everything should be ok. 
Tried to get feedback at the back for 2 weeks, no answers at the branch and when they put me on the phone with some type of BACK OFFICE agent the final conversation was that I needed to wait and that the account was being investigated. 
I've provided them with everything they asked including contact for my landlord, copies of the XXXX for the job. copies of other check from this client that was made out to us. 
Wrote 13 email to the contacts provided by the bank and have never had one reply to my email not even with status. 
I've received a letter saying that the account was closed, then a letter sayin the account was set for deposit only. On the phone they say the account is closed but I have nothing regarding my funds. 
I have a letter that I've asked for in the branch showing my balance. 
This is an email written to the bank " This is for a XXXX checking account ending in # XXXX. 
Obviously you must have all the information on your end. 
I do understand we are ending/closing the account with capital one which very well be a blessing. 
I have been trying to get information about what was wrong as well as the timeframe for this process to take place. 
3 weeks have gone by with no contact whatsoever from the bank. I've sent emails to the contact I had and did not have one reply. 
Tellers and managers at the branch kept repeating the same things over and over, requesting documents that were previously submitted, your back office requested information to be brought to the branch after XXXXne week of us visiting the branch to resolve this issue. 
These funds are part of a project that is now very much on the line because I can not operate my business. 
We have accrued a lot of fees for ( returned check ) that i wrote with 100 % of certainty i had the funds because i had checked prior and spoke to my bank XXXX. 
I only had XXXX checks and made them out to $ XXXX and $ XXXX. where the one compensated and the second one did not as you can see. So you can imagine the burden this situation has caused on my business. Regardless of the past issues I've addressed for information purposes. 

At this time my understanding is that our funds were still not sent back to us. 
Please confirm this information. 
We need to know how long your protocol may take. 3 weeks is way too long for this hold to take place. We have financial responsibilities and this is crucial at this time. 
I need to inform professionals that I'm in fault with some type of information regarding the release of my funds. 
Please take the time to elaborate this answer as my business is in a crisis. 
We look forward to your feedback. 
Thank you in advance for your time and attention to this matter. 
Sincerely " Please advise what can someone on my place do at this time. Our business suffering daily and our projects becoming liabilities. 
Regards