Pathetic service

I lost my card in august 2017 and had to go in store to replace my card they then asked me to send verification documents which is a copy of my Id and 3 signature samples which i did. I recent got a new got a brand new cellphone where i contacted the call centre( customer service) to had my number change they did a full security question check which i answered and then asked me to hold. The lady i spoke to Gabriel then told me "in order for us to change your cellphone number you need to send the following documents: a copy of my id and 3 signature samples, i then told her that you guys already asked for this documents and she told me that i need to send it again. I then asked to speak to a manager or supervisor and then spoke to Voyiso bandolo there supervisor Mr. Know it all, and told me that they delete the documents once they receive it. Which to me that focken pathetic. All this just to change my focken number! Ive never had such issues with any other company.