Do not support Pick n Pay Express Edgemead(BP Letchworth)

Received the worst service ever from Pick n Pay Express Edgemead (BP Letchworth). Was double billed on a purchase, I contacted management once I saw that they banked both transactions, was advised by Anthony Hartman they'll investigate and he will call me back the following working day, a month later still waiting and I needed to go around again, spoke to other manager Brent Oppels who advised me same thing they'll have to investigate. He got back to me advising I must bring my bank statement to prove yet I've given screenshots from my banking app, smss and all the transaction details. They can see they deducted twice, why must I go through so much effort to get my money back. Requested to speak to higher management, owner Heinrich Frans. My word, this store needs new management and owners. I will never support or recommend anyone supporting. He has less management, ownership or customer service skills than Anthony and Brent. Heinrich did not even apologise, asked me to send my bank details and did an eft for the double charge glad that's sorted but he did not even pay a cent more yet they sat with my money for more than a month. I needed to waste my time and petrol to go around to the store thrice prior, up and down just trying to get my money back that I ended up spending more in the time and effort that the actual amount and Heinrich couldn't even apologise or compensate. He made it seem like my problem yet his store, himself and staff are the *********** ones.