I have a stall in a market, o ver the recent months I had befriended another stall holder who has a much larger fruit and vegetables shop and was struggling to manage on their own, I offered help to put stock out etc to give a hand, over the weeks I graduated to helping on the till also (all unpaid) one afternoon they confront me and accuse me with underringing the till and pocketing the money, the evidence they have is a till roll which says 1p on it numerous times , I have no idea where it came from, they have now told everyone in the market I'm a thief and my takings has plummeted, apparently they saw me stuff pound coins in my pocket but said nothing at the time!!!. I know they were struggling to pay suppliers and now everyone is putting their arm around them saying it's not your fault you're behind with the payments when you had a tealeaf on the till! They were behind before with payments What do I do.