I'm somewhat familiar with estoppel but I'd really like your thoughts on the situation.
Basically my previous employer wrote the wrong name on my leavers form, resulting in me being paid a full months wage as opposed to the 1 week I was due to be paid.
As soon as I noticed the additional funds in my account I contacted their payroll department via telephone and advised them of the error. A day later they called me back and advised me repayment had to be made asap. I queried the whereabouts of my P45 as I needed it for my new employer but they weren't able to provide me with it as they "would not have the facility available until payroll day." I made an agreement that upon the receipt of a correct P45 alongside relevant documentation corresponding to my employment at the company I.e. payslips, holidays booked etc. I have yet to receive said P45 (3 months after my call to them) however they are now constantly chasing me via email.
I appreciate I'll have to pay it back and although I have some funds, I cannot afford to pay it back in a lump sum, given my wage only supports me for basic living expenses alongside bills etc.
I'm just lost and I haven't any clue what to do. My current director (who is conveniently my old directors best friend) has told me to forget about it and keep the money as a float to support my finances, given my old boss is recognised by many as the type to take backhand deals and pay the majority of his expenses in cash.. (you can see what kind of director he is...)
Where do I stand?