Revive wellness spa

I sent an email to book for a session and they said I need to pay R850 to secure the booking ,so I did and sent POP by email.When we got there the was no electricity so we opted to have the kids treated to a massage and rescheduled for the 25th of feb On the 6th we went to the spa,they overcharged me and when I made them aware of this they said they will refund on Monday which even today im still waiting for my refund .I've been inquiring about this they even changed their whatsapp number ,I sent them an email they still not responding .I have never seen such poor customer service my whole entire life .