After I left my job, the bank still sent me a text message.

1, this kind of thing is still recommended to be solved through communication and consultation with the unit first. It is really impossible to communicate, and it can be solved by litigation. However, I suggest you communicate with your original unit.

2, or contact the person in charge of the unit and the bank personnel respectively, and keep the corresponding evidence recording. Explain the facts clearly so that they are directly related.