Questionable Charges

On my previous MasterCard statement there was a 'Cash finance Charge". Apparently this was for an online purchase I made but was not aware of the additional charges this would generate via that specific source. On 7 December I called and the matter was resolved and the fee reversed. On the 7th or 8th December I sent a message requesting a list of the payment channels where these additional charges are raised. Until today 7th January 2020 I HAVE NOT EVEN RECEIVED AN ACKNOWLEDGEMENT OF RECEIPT, let alone the information I requested. Today I received my latest statement and again there is a similar charge. I DON'T KNOW WHAT THIS IS FOR. I've been a MasterCard holder since 1974 and over the years the service has deteriorated to the extent where it is virtually non-existent, that is unless you are part of the elite client group. The arrogance with which clients are treated is deplorable. I'm not sure if it's incompetence, just-could-not-care or whatever other reason there might be but this attitude does not make for good client relations. I can remember a time when the balance of your account was not indicator what level of service you received or not received.