Overcharge

My son ordered a bolt today 08 March from Bentley office park in Rivonia to Rosebank. The app said R80. The driver was Tokelo. Tokelo's data was off and he got lost. My son then had to use his phone to get directions. On arrival he notices the amount had changed from R80 to R121. This os really ridiculous and not right. It was not my sons fault that that driver Tokelo got lost and his data wasnt working. I would appreciate it of you could refund 41 as he is a student and works on a tight budget.