Connectivity and Billing Sucks.... Bad service

It has been 3 to 4 month now with interrupted service, I have been paying for 100 %of service in the meantime I have been receiving only 45% of coverage during the day. I tried so many times report this with them they don't attend to it.

They went into my account trying to debit for the whole month which left me with massive bank charges that I had to pay. Tried to get hold of their billing department with no luck.