Look very closely at the two typed billing documents, (a) Jeremys cottage, and (b) whf? The format of the billing detail is completely different. This suggests very strongly that one (a) had a different type of phone contract to the other, One (a) had a business contract, the other (b) did not. One (b) had its calculated by reference to a metered call log, whilst the other (a) was calculated by reference to itemised calls as part of a business call package...
Somebody tried to produce a metered call log pertaining to whf, so that deatils of Ralphs call to Jeremy contained in the business itemized billing log did not have to be mentioned at court...