Internet disconnected twice in 1 month even though account was paid

Vumatel disconnected my internet on both 2 and 9 November stating I have not made payment when in actual fact I have. I ended up paying twice to have my internet reconnected as I am a work from home single mom. When I queries the 2nd payment so I could get a refund they said they have only received 1 payment even though I have sent statements for both. The customer service via whatsapp is the worst if u don't get in contact with someone in the morning u can end up waiting hours for someone to respond. I have explained my situation on 3 occasions to their agents for hours on end ending the same pictiss of payments and Confirmations and then they end up transferring me to the technical department but when I'm transfered I never get through to the next agent and the chat drops. It's been a long and exhausting process and I still havent gotten any help. I have requested to speak to a Manager but no one has ever put me through. I am starting to regret choosing them as my home internet service provider because the customer service is poor. I really hope u can do better