In some circumstances we can recover the overpayment from your landlord, but only if we consider your landlord knew about the change and did not tell us.
Dan rai amgylchiadau gallwn adennill y gordaliad oddi wrth eich landlord, ond dim ond os ydym o’r farn bod y landlord yn gwybod am y newid a heb roi gwybod i ni amdano.