PATHETIC IS WHAT I CAN SAY WORST EXPERIENCE EVER!!!!!!!!!!

If there was a -10 rating i would rate vodacom a -10. They harass me from last moth i need to pay my bill that i did with proof of it and they say i need to pay there was insufficient funds that was not true because i do have proof where it went of. Now they send me a mail again stating that i need to pay a double amount, they did not even deduct this months bill now i need to pay a double payment. HAHA it shows you how pathetic they are having a debit order account and now all of a sudden a account that i manually need to pay