Legal liability of the employee for unpaid invoices by clients

The actual problem is that I am handling accounts Receivable and one of our customers didn't pay some invoices of 2017.

At that time, I was handling that client and my company is stating that this problem arose due to my follow up.

And I gave one letter to my company recently for apologizing against this issue as per my management's instruction.

But, later they converted that letter by stating as my fault and there to get money from here.

Now I am in a tough situation where my visa is already expired today and going to overstay here.

What can I do to overcome this problem?

We can defend you in the above matter easily along with getting your cancellation process completed smoothly.

Let me know if you want our representation, then we will explain to you how to proceed and what to do next.

Yes

I need your representation.

Please proceed as discussed on the call.

Thanks