The absolute worse financial service provider, apalling customer service

Two months back, internal ***** was committed on my RCS shop card. Never received an explanation or apology from RCS. Now without any reason, explanation or contact from RCS my Makro credit card was cancelled. Its no use to go into the Makro app, as all my balances reflect as zero. I never defaulted, skipped payments or whatever. Hell, I never maxed out on my card. Its no use to contact the customer services. You hold on for ever, no empathy and effort to resolve the problem, or to give a reasonable explanation. Attitude is 'your problem, not ours'. No reply on my email, except the automated response. But come tomorrow night, they WILL present their debit order. Worst financial provider ever.