Overcharged and lack of customer support

I made the mistake of using Taxify/Bolt instead of my usual Uber trips,as the price was slightly cheaper than Uber when I got a qoute. The trip was to and from the exact same destination. The first trip cost me R74 (8km) which was fine,even though it was on the highest end of the estimation price. The return trip (exact same route back) was estimated at between R60 and R80 (cant remember exact amount). The driver Sihle lost his was and took the wrong turn.His GPS even went offline and he had no clue where he was going,until I helped him out. I was charged R134 for this trip (more than double the estimated price). There is no phone number to get hold of Bolt service consultants,and when you request help via email or the app, they respond but you never hear from them again. This business is very shady and should be shut down. Dont ever use this app,rather use Uber because the price you select is not a cent more than what is charged to your debit card. I was in touch with someone called Fungisani from Bolt who offered to give me a R50 discount on my next ride. I rep**** to him/her that I would accept the R50 voucher but ideally would prefer my credit card to be credited with the overpriced amount. However I have not received any feedback or reply from this person up till now. If I am not reimbursed with this amount they owe me in a few days, they can keep their money and I will be deleting this app and not recommend it to anyone or any business that is thinking of using their services.