I made an order this morning for collection, I said I would pay cash

I made an order this morning for collection, I said I would pay cash. I followed the route of the vehicle. It was a White Kia. Once it was at the sender's collection, I received a message , driver/collection canceled. Unbelievable. I then drove myself to collect my delivery. I did not receive any information about why this occurred. I would like to warn people, do not trust Bolt if you going to pay cash