Bad customer service

I was assisted by an agent name Marvin with regards to changing my premium and decided to go with Miway blink. They had deducted the first debit order for the initial premium and said that they would refund it within in 5-7 working days and then deduct the debit order for the Miway blink premium. That was not done. We are on day 10 and I still have not received my refund however they had already deducted for the Miway blink premium. I have been shoved from pillar to post. I spoke to an agent named Paseka Marite on live chat which blatantly disregarded my query and left the chat without assisting me, I then spoke to an agent named Thuto Mokagatlha which told me I would receive the refund on the 6/12/2023 which was still not done. I have never received such bad customer service! If I could rate this service zero I surely would!