Please Unfreeze Account

I recieved a payment from an African bank client and i provided my services to her,same day i got my account locked so I went back to that person and she didn't report me coz she knew she recieved my services. My account is frozen even after submitting the required documents. why must I suffer in whatever is happening when im a third-party in all this? How am i supposed to know how that person gets their money when im not even close to that person? Im so disappointed mainy coz no investigator is being assigned to my case so it can be resolved. Multiple times I called in and they all struggle to get my email while i was instructed by them to reply with my documents. Please assign my case to an investigator so i can use my account,i shouldn't be held liable for other peoples mistakes. Block their accounts but release mine please coz i don't expect my main bank to fail me like this.