Worst service provider

I have been banking with Capitec Bank for 10 years now and I have a credit card with them and a personal loan that I pay for every month on the turn never missed and never short paid, now I see that they have been rejecting my debit orders and not advising me why! 2 months now! My cellphone debit order had been rejected twice and this month my gym as well and I am then put in arrears because I knew nothing about it and I am charged a further rejection fee because of the stupidity of my bank I refuse to get this kind of service from my bank who I am been a loyal banker with for so long and this is how they treat their loyal and well paying customers its ridiculous and frustrating that I have to do all the running around to fix their mistakes it's not on.