Horrible Customer Service!!

Ever since i have had a subscription with Rentoza i have never ever missed a payment and now i just got a new job and my pay dates have changed.I did try to talk to them in regards to that instead of them being considerate and going through my pay record as their customer, They decided to lock my phone mind you im on my 11 month, next month is my last month with them and i have never given them problems in regards to payments. They didnt even give me a grace period which was stated on my contract they locked my phone on the first day which is the 28th and i have the funds to pay but i cant even access my account to make a paymet and guess what i have R300 to pay for a late payment fee of which i was going to make a payment on the 29th, the same day my phone was locked how inconvenient. So imagine me referring people to a company like this never! I cant wait to finish my subscription with them and leave this company cause i must say its the worst!