CM is a lovely lady and I would say that we have a very good relationship. But without a doubt each month she invoices me incorrectly, usually for an amount higher than it should be. I have to go through each item and calculate everything myself to ensure that she hasn't over-charged me.
This month she has invoiced me at a higher daily rate than what it should be. We have only just signed contracts and I had a sinking feeling for a moment that she had put her prices up without telling me and I had signed without realising. However I have just checked and she has definitely made a mistake.
I think this is really un-professional. She has to re-issue the invoice to me each time. Has anyone else had a CM do this? Would any other CM's admit to making mistakes like this so regularly? Also should she be issuing a new invoice with a new no or can she use the existing no?