I'm so frustrated and disappointed with Rain

I must say I'm really disappointed with rainone. When I was enquiring about your product I would send an email and immediately I receive a call,now that im taken the contract that service is gone. I don't know how many emails I've sent to rain,how many call backs I've sent. Even your app service agent still not working for me. Wednesdays I decided to call myself. I asked why rain doesn't allow manual payments because I want to pay before payment date while I still have money. The lady I spoke to said they don't allow it. Now I'm telling her I've changed my payment date to the 15th because I don't normally has funds on the 1st. I changed it on the app infact the live agent o. The app changed,when this one checked it seems ot was never done. And she changed while we on the phone conversation and she sent an email confirming. Now I'm waking up to a message that they tried to debit and it bounced and I'm liable for the charges. I tried to call rain this morning and I stayed on line for almost 30min and no agent is available to pick up my call. I'm really frustrated and disappointed with your service rain and I'm not gonna pay for any charges because I've tried to communicate way before month end wanted to make a manual payment. Why????? I thought you were the best when it comes to service.