Product: Checking or savings account

On XX/XX/XXXX I mobile deposited a check I received from the dealer as a reimbursement for dmv fees regarding the purchase of my truck. The check sat through a 9 day hold and was credited to the account, they took out what I was overdrafted and a balance of {$810.00} was left out of {$870.00}. That same day my accounts online/mobile access was blocked. I immediately called and asked why the block was put on my account, when I was then told that my account was under an initial review by the back office team and I would receive something in the mail. I was told it would be 4 days and theyd have it done on XX/XX/XXXX. On XX/XX/XXXX I called again to see what was going on and because I still had not received any written correspondence in the mail in regards to the availability of my funds or the reason my account was blocked. I was told there was nothing that the representative could do for me and theyd note the account of my call but that they had to get in contact with the back office. On XX/XX/XXXX I called again because I had not heard nor received anything about my account or availability of funds. The representative I talked to told me that my account was still under review and they would note my account. On XX/XX/XXXX I called again and was told that my account was still under review and that my deposited check is being returned, when I asked for more information I was told that was all they had and theyd note the account and Id receive written correspondence about it. On XX/XX/XXXX I called again and brought to there attention Federal Law, Regulation CC Subpart C Collection of Checks section 229.30 & 229.31 & 229.33 regarding the expedited return of checks and notice of returned checks, because the check was still in my available purchasing power but being withheld from me. I also brought to there attention in the XXXX XXXX  Account Agreement subpart G Availability Section [ i ] [ ii ] [ v ] [ vii ], Deposit and Application of Funds & Subpart H Purchasing Power & Overdraft Section [ i ] [ ii ] [ iii ], which proves the check has not been returned because it wouldnt be in my account under available purchasing power. They continue to keep the block on my account and refuse to release the funds to me, still as of today my balance shows {$810.00}. I asked for a complete source of receipt today XX/XX/XXXX showing the returned check, which they refused to provide me with. I brought to there attention Federal Law, Regulation CC Subpart B-AVAILABILITY OF FUNDS AND DISCLOSURE OF FUNDS AVAILABILITY POLICIES Sections 229.10, 229.12, 229.13, 229.15, 229.16, 229.17, 299.18, 229.19. I continue to get nowhere by having verbal correspondence with them and they continue to violate my rights under federal law as well as their own account agreement. Im very aware that XXXX XXXX in its sole discretion and without notice to you, to the extent permissible under applicable law and other governing documents applicable to your account, decline, cancel or reverse your orders or instructions, or place trading, disbursement and other restrictions on any of your accounts. That does not give them immunity to Federal Regulation CC, Subpart B-AVAILABILITY OF FUNDS AND DISCLOSURE OF FUNDS AVAILABILITY POLICIES Section 's 229.10, 229.12, 229.13, 229.15, 229.16, 229.17, 299.18, 229.19. & Subpart C-Collection of Checks Section 's 229.30 & 229.31 & 229.33. They also stated that I need to work with the issuer to have it reclaimed, meaning that the check has not been returned. Which would explain why its still today XX/XX/XXXX in my account under available purchase power, yet they are withholding my funds and violating my rights under Federal Law.