Poor Bad Bad Service.

We are clients of Iemas for the past 30 years. We had excellent service in the passed till they switched to a new format . Since November 2019 I have struggled with them to rectify my card account as I have paid my account at the ATM as I did for the past how many years without any problem .Since then they tell me that I am in arrears and charge interest on that so call outstanding amount I sent them numerous times the proof of payment. Now every month they suspend my card because according to them I am in arrears which I am not. So every month it is the same old story holding on for ever getting disconcerting and handled like a thieve . I am sick and tiered of your incompetence get your act together and sort my account out how long must I still struggle? I demand that somebody that know what is going on contact me and sort this ASAP as I am really getting feed up with your service. ***