Private bus contact in Gotemba

Hi.
We are a grp of 35 ppl and would like to hike up Mt Kintoki at Gotemba before our trip to Mt Fuji.
As we are not familiar with the bus system and its punctuality in the bus timetable, we are seeking for help if any kind soul here have the above contact we are looking for, would be much appreciated…
FYI, we have tried contacting some bus rental services but the price is very very high to us as we are a group of budget travellers and would like to keep the price within our budget…
Hope to hear from you soonest…thx.

Cheers.