Do not let Gobid auctioneers fool you

I am a vehicle dealer that has experience bad service from the branch in pretoria on viewing a 2015 polo tsi that I had want to purchase ,I have purchased alot of vehicles from the midrand and jhb branch with no issue except the pretoria branch , I have notified thando she said ok it's not a problem so 3 to 4 working days later I explain I have to cancel due to not having enough to pay yet I buy 2 other vehicles between the same time , I'm preparing to buy more vehicles today when I look they have just taken my deposit, I am told it's for canceling no warning no email or call they just take your R5000 ,yet I was able to bid last week Friday and pay now they are demanding another deposit in order to bid personally it's terrible service, it is the first time I canceled and informed them immediately of the issue Theres nothing I can do that's what I'm basically told So frustrating working with business that feel they can just take ,unfair business practice ,2500 handling fee ,2500 on the road fees yet they just register to you which cost R500 And then 5000 deposit which they just take if you "breach contract as they say"