So extremely frustrated

So my re originally said I would have my IUI today so I took off of work then Tuesday they said it might be too soon but they would call me yesterday with results. Well they never called so I went back this morning and they said my follicle was small so they would probably do the IUI Sunday. Well now they call me and say I'm surging so I most likely will ovulate tomorrow but I cannot take off of work tomorrow too! ( but I still haven't gotten a peak on my opk) so I scheduled an IUI for Saturday but it may be too late. So basically they should have done the IUI today as planned but they didn't! Im so frustrated.