GIVE WRONG PRICING

i went into Midrand motor spares in december for a bmw 1series clutch kit, the guy told me its R3700 but if i come in January it will be R2400, i then waited, i called in January concerning the clutch kit he then tells me it is now R4200 as his supplier picked the price up, he should have not wasted my time of giving me wrong pricing if he was not sure, i could have done my clutch kit in december if he did not waste my time, DONT GIVE PRICES IF YOU NOT DAM SURE