Worst Fruadulant Customer service

Numerously I tried calling you will be put on hold and when it's your turn the phone hangs up sent numerous emails and no response even Bayport tried to get hold of them to settle and they updated the amount to R1900 and today I get a call from Hybrid demanding a payment of R3900 what is going on with this company. I am losing my marbles trying to reason with them. I had reached them before negotiating and was rejected